Thursday, December 13, 2007

Invention: Green power special

link:http://technologynewscientist.com-invention:greenpowerspecial

summary:a man named Levinson and he belives that kidney cells transporting ions, and could be well suited to making a miniature battery.He suggests that such biobatteries might be ideal for powering devices inserted in the body, such as insulin pumps or pacemakers.and so he went for it

Questions: What reactions does this enzyme catalyze?it transports ions to the kidney
How is the cell affected if this enzyme is removed? i think it effects it in a bad way because the ions are needed for transporting information
List three things you learned from this article in your own words.ions are transported to the kidneys,the cell culture can draw oxygen, and producing biobatteries with the kind of voltages needed to run medical devices.
What impact would the absence of this molecule have on the cell? bad we need them to help transport

Last Word: Sacred DNA

link: http://www.newscientist.com-lastword:scared dna

summary: this passage discusses maily dna and where its found how its found and ect. it also talkes about Biologists routinely construct yeast and bacterial lines.

question:What are the major functions of nucleic acids in the cell?n/a
What are the differences in RNA and DNA? dna is found every where including in a cell culture while rna isnt founn in cell culture.
List three things you learned from this article in your own words. i learned dna can be found in cell culture,it generally requires animal serum to keep the cells alive,and white blood cells contain dna
What impact would the absence of this organelle have on the cell?horrible impact the cell i think couldnt survive

Ecology and diversity

link: http://www.newscientist.com-ecologyanddiversity/

Summary: This passage is basicly comparing the world of ecology to diversity.It also tells us about the number decrease of biodiversity.and how we go a little beyond this to recognise ecosystem and species.

Questions: What kind of relationship is being described in the article? a similaritie between the two ecology and diversity
Describe the niche being discussed in the article. the article talks about Convention on Biological Diversity
List three things you learned from this article in your own words. The conservation of diversity and its sustainable and equitable use is the basis of the 1992 Convention on Biological Diversity, that Diversity at all levels of biological, taxonomic and ecological organisation is the fundamental basis for human health and sustainability.
What impact would the topic of the article have on the biosphere? n/a

Wednesday, December 12, 2007

Preventing Tuberculosis Reactivation

link:http://www.sciencedaily.com/releases/2007/10/071018090450.htm

Tuberculosis (TB) is the leading cause of death due to infectious disease in the world today. It is estimated that 2 billion people are currently infected, and although most people have latent infection, reactivation can occur.

Human Disease
What are the symptoms of this disease?Nausea, weakness, fatigue, rapid weight loss, fever, night sweats, cough, and chest pain
How is this disease passed from person to person?coughing and sneezing
List three things you learned from this article in your own words.The signs and symptoms, how it is passed, and it is deadly.
What impact does this disease have on the US economy? It has killed a lot of people.

Progress Toward Artificial Photosynthesis?

Link: http://www.sciencedaily.com/releases/2007/03/070312152123.htm

Summary: This article is about the progress toward artificial photosynthesis using a special new type of metal-free catalyst: graphitic carbon nitride. The reason it's hard is become it takes a lot of energy to break down the Carbon bonds in CO2.




What is the chemical equation for photosynthesis? Carbon Dioxide + Water = Glucose + Oxygen

What organelles are involved in this process? chloroplasts

List three things you learned from this article in your own words. CO2 bonds are difficult to break, artificial photosynthesis is possible, their are few metals that can break co2 bonds

What impact would the absence of this process have on the biosphere? Without photosynthesis and in turn plants their would be no oxygen which would kill humans leaving the earth without carbon dioxide.

New Findings On Sour Taste

link:http://www.sciencedaily.com/releases/2007/07/070709103854.htm

Summary:Food manufacturers may soon have more control over the amount of sour taste that comes through in a variety of acidified food products.Sour is one of only five primary human taste sensations, and is stimulated by organic acids. Some organic acids are naturally present in foods, such as the citric acid in oranges, malic acid in apples and, as a result of fermentation, the lactic acid in yogurt. These and other organic acids may also be used as food ingredients.

Organic Molecules
What is the major role of this molecule in the cell?taste
List three things you learned from this article in your own words.They are used in oranges, in yogurt, and in apples.
What impact would the absence of this molecule have on the cell? Some of the foods that we eat might have a different taste.

Flip-flopping Gene Expression Can Be Advantageous

link:http://www.sciencedaily.com/releases/2007/11/071126103616.htm

Summary:One gene for pea pod color generates green pods while a variant of that gene gives rise to the yellow-pod phenotype, a feature that helped Gregor Mendel, the 19th century Austrian priest and scientist, first describe genetic inheritance. However, many modern-day geneticists are focused on the strange ability of some genes to be expressed spontaneously in either of two possible ways.

Mendel and Genetics
Explain the phenomenon being described in the article.pea pods being green or yellow
What is the difference between a genotype and a phenotype?genotype are the letters and phenotype are the physical apperance.
List three things you learned from this article in your own words.Mendel used pea pods for his experiment, he was a priest, and he described genetic inheritence.
What impact would the not understanding genetics have on medicine or agriculture?We would not have some of the medicines and crops that we have now.

Scientists Unravel Ancient Evolutionary History Of Photosynthesis

link:http://www.sciencedaily.com/releases/2000/09/000913211733.htm

Summary:In photosynthesis, green plants use the energy of sunlight to convert carbon dioxide into hydrocarbons that promote plant growth while generating oxygen from water and releasing the oxygen to the atmosphere. All animals including humans depend either directly or indirectly on this source of food and oxygen. Consequently, photosynthesis is considered the most important chemical process on Earth.

Photosynthesis
What is the chemical equation for photosynthesis?CO2 + 2H2O >> CH2O + O2 + H2O.
What organelles are involved in this process?chloroplasts
List three things you learned from this article in your own words.This helps the plant grow, all animals depend on this , and it is the most important chemical process on earth.
What impact would the absence of this process have on the biosphere?there wouldn't be any oxygen on earth.

Chloroplast

link:http://www.sciencedaily.com/articles/c/chloroplast.htm

Summary:Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis.Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.

Cell Organelles
What is the major function of this cell's organelle?conduct photosynthesis
Which cell types have this organelle?plant and eukaryotic algae
List three things you learned from this article in your own words.They absorb sunlight, condust photosynthesis, and help produce food for the plant.
What impact would the absence of this organelle have on the cell? The plant probably wouldn't live.

Global Warming Likely To Increase Stormy Weather, Especially In Certain US locations

Link:http://www.sciencedaily.com/releases/2007/12/071204121949.htm

Summary: There have been dramatic increases in potential storms conditions. The increase in storm conditions occur during the typical storm seasons


Questions:
What are some ways this phenomenon could be stopped?Car Pooling
Is there anything you could do to contribute to the reversal ?Recycle
List three things you learned from this article in your own words.
What impact would the continuance of these process have on the biosphere?A bigger ozone layer adn a destroyed world.

Mystery Behind How Nuclear Membrane Forms During Mitosis Solved

Link:http://www.sciencedaily.com/releases/2007/09/070915100302.htm

Summary:Just how a dividing cell rebuilds the nuclear envelope, the protective, functional wrapping that encases both the original and newly copied genetic material, has been a source of controversy for the last 20 years.

Mitosis/Meiosis
What are the differences between mitosis and meiosis?Mitosis -cell division including division of the nucleus and the cytoplasm.Meiosis-cell division in sexually reproducing organisms

What problems can arise if either of these processes is not controlled properly? The cell wont be able to divide.

List three things you learned from this article in your own words.During mitosis, the nuclear envelope disintegrates, The chromosomes are pulled apart and the cell starts to divide,individual tubules of the endoplasmatic reticulum bind directly to chromatin.

What impact would the absence of this process have on the cell?The organsim will die

RNA Enzyme Structure Offers A Glimpse Into The Origins Of Life

Link:http://www.sciencedaily.com/releases/2007/03/070315161035.htm

Summary: Researchers at the University of California have found three-dimensional structure of an RNA enzyme. It carries out a fundamental reaction required to make new RNA molecules. It the first self-replicating molecule.

DNA/ RNA
What are the major functions of nucleic acids in the cell?Identifie the DNA

What are the differences in RNA and DNA? RNA acts as a messenger,DNA carries the material

List three things you learned from this article in your own words.That the structure of an RNA enzyme, is a ribozyme, we may have the first self-replicating molecule in billions of years

What impact would the absence of this organelle have on the cell? None

Bacteria Employ Type Of DNA Modification Never Before Seen In Nature

Link:http://www.sciencedaily.com/releases/2007/12/071203142430.htm

Summary:In this passage, sulfur is being added to sugar-phosphate DNA to modify synthetic oligonucleotides. Nature has been using phosphorothioate modidfications of DNA for a while now.


Questions:
What are the major functions of nucleic acids in the cell?It identifies the DNA
What are the differences in RNA and DNA? DNA carries information while RNA makes proteins and acts as the messenger.
List three things you learned from this article in your own words.
I learned that sulfur can be added to DNA and that bacterial genes give bacteria the ability to employ modidfications ontheir own.
What impact would the absence of this organelle have on the cell?Modifications won't be able to be made.

Enzyme Linked To Breast Cancer Malignancy

Link:http://www.sciencedaily.com/releases/2007/11/071129113755.htm

Summary:FAK is linked to a type of cancer called skin carcinomas.Mice were used to disable the function of FAK in the mammmary glands. The mice being the enzymes, stopped a tumor from growing and harming.

Questions:
What reactions does this enzyme catalyze? the growth of tumors
How is the cell affected if this enzyme is removed?the tumor growth is ceased
List three things you learned from this article in your own words.
1) I learned that FAK is linked to skin carcinomas
2) Mice can lose thier life during these experiments that try to save humans
3)Mice can stop tumor growths
What impact would the absence of this molecule have on the cell? If this molecule was absent then the tumor would continue to grow.

Moving Gene In Plant Results In Increased Production Of Amino Acid

link:http://www.sciencedaily.com/releases/2001/10/011003063842.htm

Summary:By placing a nuclear gene in another location, its original home in a plant, researchers have successfully enhanced the production of an essential amino acid

Genetic Engineering
What process is being used in the article?Moving the nuclear gene
What is the purpose of genetic engineering in this article?to produce an important amino acid
List three things you learned from this article in your own words.This is an amino acid that is in short supply in the human diet. This helps out with the production of serotonin in the brain. Tobacco produces this important amino acid.
What impact would the absence of this process have on humanity?Less production of serotonin in the brain.

Unraveling The Physics Of DNA's Double Helix

link:http://www.sciencedaily.com/releases/2007/07/070712134533.htm

Summary:Each DNA strand includes a sugar and phosphate "backbone" attached to one of four bases, which encode genetic sequences. The strength of the interactions within individual strands comes largely from the chemical attraction between the stacked bases. But the integrity of double-stranded DNA depends on both the stacking forces between base units along the length of the double helix and on the pairing forces between complementary bases, which form the rungs of the twisted ladder.

DNA/ RNA
What are the major functions of nucleic acids in the cell?To send information to the nuclues
What are the differences in RNA and DNA?RNA-messenger DNA-carries the materials
List three things you learned from this article in your own words.
1.The sugar and the phosphate are the backbone of DNA.
2.The strength of the interactions of the strands comes from the chemical attraction between the stacked bases.
3.The pairing forces between complementary bases and the stacking forces between base units form the rungs of the twisted ladder.
What impact would the absence of this organelle have on the cell?It wouldn't have the genetic code.

Global Warming Likely To Increase Stormy Weather, Especially In Certain US locations

link:http://www.sciencedaily.com/releases/2007/12/071204121949.htm

Summary:Researchers who study severe weather and climate change joined forces to study the effects of global warming on the number of severe storms in the future and discovered a dramatic increase in potential storm conditions for some parts of the United States.The study found that by the end of this century the number of days that favor severe storms could more than double in locations such as Atlanta and New York. The study also found that the increase in storm conditions occurs during the typical storm seasons for these locations and not during dry seasons when such storms could be beneficial.


Climate Change
What are some ways this phenomenon could be stopped?Stop polluting the air
Is there anything you could do to contribute to the reversal?recycle
List three things you learned from this article in your own words.
1.This will double severe storms in Atlanta.
2.This will double severe storms in New York.
3.This weather change could be beneficial.
What impact would the continuance of these process have on the biosphere?The hole in the ozone will get bigger.

Sumatran Tiger

link:http://www.sciencedaily.com/releases/2007/07/070705093850.htm

Summary:The Sumatran tiger is the most critically endangered tiger subspecies in the world, with fewer than 400 individuals left in the wild. They are only found on the Indonesian island of Sumatra, where they have been relentlessly hunted for the black market and where their habitat is rapidly being lost to agricultural and logging operations.


Endangered species
Why is this species endangered?Because of poachers
What could prevent this organism from going extinct?Stop hunting them
List three things you learned from this article in your own words.There are less than 400, they are only found in Sumatra, and they are being hunted for the black market.
What impact would the absence of this organism have on its ecosystem/community?nothing

Mitochondria Defects Linked To Social Behavior And Spatial Memory

Link:
http://faculty.southwest.tn.edu/rburkett/GB%201%20cell%20resp.htm
http://www.sciencedaily.com/releases/2007/12/071204102511.htm

Summary: Respiration deficiencies in mitochondria also called the cells powerhouses, are related with changed social behavior and spatial memory in laboratory mice. Since the brain's normal functioning depends on a large amount of the ATP energy that mitochondria get from food through aerobic respiration and decreased ATP could affect behavior.

Questions:
What is the chemical equation for cellular respiration? C6H12O6 + 6O2 ----> 6CO2 + 6H2O
What organelles are involved in this process? mitochondria
List three things you learned from this article in your own words. Social behavoir changes. Decreased amounts of ATP could have affected the mice's behavoir. The mice looked healthy and didnt have any other signs of bad mitochondrial disease.
What impact would the absence of this process have on the biosphere? not sure...

Semiconductor Membrane Mimics Biological Behavior Of Ion Channels

Link:
http://www.sciencedaily.com/releases/2007/07/070712134611.htm

Summary: A semiconductor membrane designed by people at the University of Illinois could offer more flexibility. Also could make better electrical performance than biological membranes. It was built from thin silicon layers covered with different things. The solid membrane also could be used in applications such as singlemolecule detection, protein filtering and DNA sequencing.

Questions:
  1. Which components of the cell membrane are being discussed in the article?
  2. What is the purpose of the process or component in the article? to make electrical performance better.
  3. List three things you learned from the article in your own words. It made better flexibility. Electrical performance was better. It could also be used for detection.
  4. What impact would the absence of this organelle/process have on the cell? nothing would ne protecting the things inside of the membrane.

Organic Farming Beats No-Till?

http://www.sciencedaily.com/releases/2007/07/070722162434.htm


Summary:Researchers was surprised to find out that organic farming was a better soil builder than no-till.No-till has always been thought to be the best soil builder because it eliminates plowing and minimizes even light tillage to avoid damaging organic matter and exposing the soil to erosion. They also showed light-tillage organic corn,soybean and wheat with the same crops with no-till.


Organic Molecules

What is the major role of this molecule in the cell? It regenerates and make it stronger



List three things you learned from this article in your own words. It helped the soil and also produced better crops.

What impact would the absence of this molecule have on the cell? The farmers would lose money and the crops would also go bad.

Mendel and the mixed up moggie

http://www.newscientist.com/article/mg15220596.000-review--mendel-and-the-mixed-up-moggie.html

Summary: Laura Gould brings home a calico cat named George. George should be female, because everyone knows that only females can be calicos. Even a glance at George's body shaows that he is all male. This unusual discovery her on a search for the genetic anomaly that created her mixed-up moggi.

Explain the phenomenon being described in the article. A cat that is suppose to be a female looks like a male

What is the difference between a genotype and a phenotype? A genotype is the letters, the phenotype is the appearance

List three things you learned from this article in your own words.
1.) Calico cats are all female.
2.) Calico's are red, black, or white
3.) Mendel made a mistake with his experiment

What impact would the not understanding genetics have on medicine or agriculture? you wouldnt be able to know how to make medicines and cure people

New Insight Into HIV Infection

http://www.sciencedaily.com/releases/2007/05/070504131255.htm


Summary:When HIV infects the cell it carries its DNA into the nucleus of the cell then the viral DNA mixes with the cell's DNA. Also the combined DNA makes proteins that make new viruses.A scientist studied how various cellular proteins help the virus enter the infected cell's nucleus.The study also showed that by silencing genes that produce one of these proteins,HIV was three time sless infectious than when the protein was present.
Cell Organelles

What is the major function of this cell's organelle? To carry the DNA of the cell and instructions of the cell

Which cell types have this organelle?Eukaryote cells

List three things you learned from this article in your own words. I learned that HIV spreads by making proteins that infects the cell.

What impact would the absence of this organelle have on the cell? The cell would not function or have codes for the DNA structure.

How planet Earth turned green

http://environment.newscientist.com/channel/earth/mg19225804.800-how-planet-earth-turned-green.html

Summary: Earth was covered in thick sheets of ice 2.3 billion years ago. Earth thawed and it released strong oxidants into the oceans and atmosphere for the first time. This set off a chain of events that led to oxygen-tolerant marine organisms and photosynthesis as we know it today.


What is the chemical equation for photosynthesis? CO2 + 2H2O >> CH2O + O2 + H2O.

What organelles are involved in this process? The chloroplast

List three things you learned from this article in your own words.
1.) The Earth was once covered in ice.
2.) Oxygen was once deadly on earth.
3.) Oxygenic photosynthesis involves freeing electrons from water which takes more energy and produces oxygen.

What impact would the absence of this process have on the biosphere? we would be able to survive

Climate change is killing US forests

http://www.newscientist.com/channel/life/mg19526224.600-climate-change-is-killing-us-forests.html


Summary:In the Sierra Nevad mountains the climate chande is eroding the health of pine and fir trees. Ecologists have been tracking the fate or more than 21,ooo trees. Scientists looked at the first 22 years of a record, and they noticed that mortality rates of both pine and fir trees had increased. The rate at which new trees established did not change.


Ecology

What kind of relationship is being described in the article? The trees are thre life of the Sierra Nevava Mts.

Describe the niche being discussed in the article.the trees are bing killed and not replenessed

List three things you learned from this article in your own words.Humans re killing trees, ecology, and the life of the mt.

What impact would the topic of the article have on the biosphere? The Earth will get hotter and there will be even less oxygen.

New Test Improves Detection Of Liver Cancer

Link:http://www.sciencedaily.com/releases/2007/08/070808132051.htm

Summary:The main idea of this passage is Cancer of the liver is very difficult to detect, and it is a major cause of death in Asia and Africa, with rising incidence in Western countries as well. it seems to almost be impossible to track down once in the immune system so begans to spread easly.it also says that they have developed a test to detect liver cancer in an early stage. liver cancer is caused by Hepatocellular carcinoma (HCC) it is the most primary liver cancer in theses countrys
Questions:
What is the major role of this molecule in the cell? to determine weather there is a diseas in the body or not

List three things you learned from this article in your own words.some cancers are almost unditectable, liver cancer is killing peole in asia and africa, and cancer is silent but deadly in a lot of cases.
What impact would the absence of this molecule have on the cell? it would find it right away before the cell spreads all over affecting your body

Phospholipids In The Cell Membrane Help Regulate Ion Channels

http://www.sciencedaily.com/releases/2007/02/070227214350.htm

Summary: Even though the cell membrane is a protective barrier, it also is important for letting some unknown material in. They come in through ion channels that are on the cells surface. The cell membrane is home to different protein.

Which components of the cell membrane are being discussed in the article? Phospholipids

What is the purpose of the process or component in the article. To help the channel function

List three things you learned from the article in your own words.
1.) The cell membrane is the outer part of the cell.
2.) It serves as a protective barrier.
3.) It is home of proteins.

What impact would the absence of this organelle/process have on the cell? Harmful materials can get in your cells

Phospholipids In The Cell Membrane Help Regulate Ion Channels

Link:http://www.sciencedaily.com/releases/2007/02/070227214350.htm

Summary: Within the cell membrane is a protective barrier, that plays a role in letting some foreign material in the cell. The cell membrane is a specialized environment, it is home to many proteins that enable the cell to interact with the environment. One family of protein is the ,Voltage gated Channels, they are especially important in the conducting signals along and between nerve cells. By opening when they sense a change in the electric field these channels cause ions to rush in or out of the cell, conveying messages.

Questions:
Which components of the cell membrane are being discussed in the article?The Phosophlipids

What is the purpose of the process or component in the article. How the phosplipds allow particles to enter or leave the cell.

List three things you learned from the article in your own words. I learned that phosophlipids were in the cell membrane. I learned that the cell membrane is home to a variety of proteins. I learned that proteins with the cell membrane enable the cell to interact with it's enviroment.

What impact would the absence of this organelle/process have on the cell? The cell would be suseptible to foreing object both harmful and beneficial.

Over Half The World's Magnolia Species Face Extinction In Their Native Forests

Link: http://www.sciencedaily.com/releases/2007/04/070407170724.htm

Summary: Scientist have revealed that over half of the world's magnolia species face extinction in their native habitats. The Magnolia species has been identified for extinction due to the destruction of habitat to make way for agriculture and over-exploitation. From a total of 245 species of Magnolia more than 131 is in danger worldwide for extinction. The Magnolia are among the most ancient groups of flowering plants and have been long cultivated by mankind.

Question:Why is this species endangered? Because of the destruction of their habitats and over-exploitation.

What could prevent this organism from going extinct?If their habitat wasn't frequently destroyed it would help greatly.

List three things you learned from this article in your own words.I learned that the Magnolia are very old ancient plants. I learned that they are becoming extinct. I also learned that magnolia 's are cultivated by mankind.

What impact would the absence of this organism have on its ecosystem/community? the loss of the Magnolia would threaten the genetic diversity of the species,Magnolias also serve as highly sensitive indicators of the well-being of the forest in which they are located.

Climate Change Will Significantly Increase Impending Bird Extinctions

Link: http://www.sciencedaily.com/releases/2007/12/071206094116.htm

Summary: As the habitats of many animals and plants change, shifting to higher elevations, driven by rising temperatures worldwide. Many animals and plant don't become accustomed to these changes but their habitats shrink to the vanishing point, and the species become extinct. Scientist predict that by 2100,climate change could cause up to 30 percent of land-bird species to go extinct worldwide. The dropping temperatures affect all life but the plants and animals are really going to be affected by these dropping temperatures.
Questions:
What are some ways this phenomenon could be stopped? If people and companies recycle and stop using harmful chemicals that cause the ozone layer to thin. Also if people pay more attention to the greenhouse affect and how it affects the World.
Is there anything you could do to contribute to the reversal: Pay more attention to the affect these rising and dropping temperatures have on our world.
List three things you learned from this article in your own words. I learned that temperature really does play a big role on Earth. I learned that these rising tempertures are predicted to cause 30% of the bird species to become extinct by 2100. I also learned that these rising temperatures will cause many disease to outbreak causing many other problems.
What impact would the continuance of these process have on the biosphere? If temperatures continue to drop many species would become extinct causeing a shift in the ecosystem.

Tissue Engineering For Craniofacial Reconstruction

Link: http://www.sciencedaily.com/releases/2007/03/070323171654.htm

Summary: Tissue engineering has promised to be an alternate solution for the reconstruction of lost or damaged organ and tissues.Tissue engineering plans to replenish the damaged tissues by using substitutes that can survive and function during regeneration and eventually grow into the host tissue.

Questions:
What process is being used in the article?Tissue engineering
What is the purpose of genetic engineering in this article? to regenerate or replenish damaged organs or tissues.
List three things you learned from this article in your own words.
I learned that Tissues can be replenished. I learned that damaged organs can be repaired or regenerated by this process. I learned that the scaffold architecture influence the behavior of cells on tissue -engineering constructs.
What impact would the absence of this process have on humanity? Many people would not survive from transplants because the damaged organs and tissues wouldn't function correctly.

Progress Toward Artificial Photosynthesis?

Link: http://www.sciencedaily.com/releases/2007/03/070312152123.htm

Summary: In the process know as photosynthesis plants use light as their energy source. Chemist are also trying to be able to use CO2 as a carbon source for their synthetic reactions. Some Scientist have successfully activated CO2 for use in chemical reactions by using a special new type of metal-free catalyst:graphitic carbon nitride.
Questions: What is the chemical equation for photosynthesis?CO2 + 2H2O >> CH2O + O2 + H2O.

What organelles are involved in this process? The Chloroplast
List three things you learned from this article in your own words.I learned that scientist can make artificial CO2. I also learned the equation for photosynthesis. I also learned that sugar,oxygen,and energy is produced from this process.
What impact would the absence of this process have on the biosphere?Plants could't produce sugars that are beneficial to their health and the world so life would not survive.

Tuesday, December 11, 2007

Cell Organelles

Talk about HIV enters a host cell and DNA into hots nucleus and describes the virus spread through the body. Organisms in the other four kingdoms are eukaryotes. Their DNA is organized into a true nucleus surrounded by a nuclear envelope which consists of two bilayer membranes. The nucleus of eukaryotic cells contains the genetic material which chemically directs all of the cell’s activities. Usually this is in the form of long strands of chromatin made of DNA and affiliated proteins.

What is the major function of this cell's organelle?Brain
Which cell types have this organelle? Eukaryotic
List three things you learned from this article in your own words.learn more
What impact would the absence of this organelle have on the cell? animals and plants this organelle are absence.

Organic Farming Beats No-Till?

http://www.sciencedaily.com/releases/2007/07/070722162434.htm


The article talks about how organic farming can improve soil. All around it produces better crops for farmers. It explains what it does for the soil and why.

What is the major role of this molecule in the cell? Its regenerates it and makes it stronger.
List three things you learned from this article in your own words. That this was good for the soil. It also produces better crops. Farmers have been practicing this process for many years.
What impact would the absence of this molecule have on the cell? Farmers would loose money and the soil would go bad.

New Insight Into HIV Infection

http://www.sciencedaily.com/releases/2007/05/070504131255.htm

The article talks about how HIV enters a host cell and carries its DNA into the host's nucleus. It describes how the virus spreads through the body and inffect other cells.

What is the major function of this cell's organelle? Hold and transport information and is like the brain of the cell.
Which cell types have this organelle? Eukaryotes
List three things you learned from this article in your own words. That viruses have protective protiens. Other than that we have already learned this year.
What impact would the absence of this organelle have on the cell? No plants or animals would be here.

Organic Molecules

Exploring biology with small organic molecules

Small organic molecules have proven to be invaluable tools for investigating biological systems, but there is still much to learn from their use. To discover and to use more effectively new chemical tools to understand biology, strategies are needed that allow us to systematically explore 'biological-activity space'. Such strategies involve analysing both protein binding of, and phenotypic responses to, small organic molecules. The mapping of biological-activity space using small molecules is akin to mapping the stars uncharted territory is explored using a system of coordinates that describes where each new feature lies.

What is the major role of this molecule in the cell? Organic molecules substance that contain carbon, are livinf thing.

List three things you learned from this article in your own words. small O.M and biological systems.
What impact would the absence of this molecule have on the cell?

Mitosis/ Meiosis

Mitosis, the process of somates dividing, there are four steps: Prophase: The chromosomes form paired sets, the nuclear membrane dissappears, and spindles form. Metaphase: The chromosome pairs move to the center of the spindle formations, and separate. Anaphase: The daughter chromosomes move to opposite ends of the spindle. Telophase: The two different groups of chromosomes each have a nuclear membrane formed around them. The rest of the cell splits. Meosis is the process of a gamete dividing. Basically it goes through the process listed above twice, mixing some of the genetic material up which allows for variation among the resulting cells. I don't have those particular notes with me at the moment, but I will be going home tomorrow and promise to have a more detailed description by tomorrow nite. Kyle

What are the differences between mitosis and meiosis? Mitosis has four stage and Meiosis has eight stage.
What problems ca arise if either of these processes is not controlled properly?Mitosis. The process of somates dividings and meosis is the procsses of gamere
List three things you learned from this article in your own words. non sex cell and sex cell
What impact would the absence of this process have on the cell?anaphase

DNA/RNA

Polymerase Mu Is a DNA-Directed DNA/RNA Polymerase :DNA polymerases are defined as such because they use deoxynucleotides instead of ribonucleotides with high specificity. We show here that polymerase implicated in the nonhomologous end-joining pathway for repair of DNA double-strand breaks, incorporates both ribonucleotides and deoxynucleotides in a template-directed manner. We therefore addressed the impact of ribonucleotide incorporation on the activities of factors required for double-strand break repair by nonhomologous end joining. We determined that the ligase required for this pathway readily joined strand breaks with terminal ribonucleotides. Most significantly frequently introduced ribonucleotides into the repair junctions of an in vitro nonhomologous end-joining reaction an activity that would be expected to have important consequences.

What are the major functions of nucleic acids in the cell? Nucleic acid is made of alternating sugar and phosphate molecules bonded together in a long chain.
What are the differences in RNA and DNA? both are composed of repeating units of nucleotides. Each nucleotide consists of a sugar, a phosphate and nucleic acid base. The sugar in DNA is deoxyribose.
List three things you learned from this article in your own words.Cellular double-strand break repair.
What impact would the absence of this organelle have on the cell?

Human disease

Early Symptomatic HIV Infection: Synonyms and related keywords: AIDS-related complex, human immunodeficiency virus, HIV, viral infection, acquired immune deficiency syndrome, AIDS, immunologic impairment, immunocompromise, pre-acquired immune deficiency syndrome, pre-AIDS, ARC, thrush, oral hairy leukoplakia, herpes simplex virus, HSV, varicella-zoster virus, VZV, shingles, herpes zoster, thrombocytopenia, acute inflammatory demyelinating polyneuropathy, mononeuritis multiplex, myopathy, persistent generalized lymphadenopathy, PGL, oral lesions, anemia, aseptic meningitis, aphthous ulcers.

What are the symptoms of this disease? There are so many disease like AIDS, HIV, cancer.
How is this disease passed from person to person?AIDS
List three things you learned from this article in your own words.How we get HIV infection to
What impact does this disease have on the US economy?most of cancer and AIDS

Mendel and the mixed up moggie

Link: http://www.newscientist.com/article/mg15220596.000-review--mendel-and-the-mixed-up-moggie.html

Summary: the passage is bassed on when a woman brings home a cat and she thinks because it is a certain color it should be sex linked by that. she goes by the theory that only females can be calicos (black, red and white).it linked between mendles experiment with One crucial revelation being the difference in the method of sex determination between cats and peas (Gregor Mendel's favourite vegetable)

Questions: Explain the phenomenon being described in the article. N?A
What is the difference between a genotype and a phenotype?phenotype is when your determaning 1:1 or 2:4 percent is this or that while genotype is almost the same but u use letters not whole words and u determine 100% or 50%ect.
List three things you learned from this article in your own words.
What impact would the not understanding genetics have on medicine or agriculture?

Genetic Engineering

http://www.newscientist.com/article/dn10533-genetic-engineering.html

Summary: Workers took eggs containing fruit-fly embryos in different stages of early development. Then they soaked them in DNA. In these experiments, the DNA was kept from other flies that were different in a lot of ways from those providing the eggs. The difference involved ten or eleven genes on different places on the chromosomes.

What process is being used in the article? Taking eggs from fruit-flies and soaking them in DNA

What is the purpose of genetic engineering in this article? To change the structure, the color of the bristles, wing veins, wing structure, and eye color

List three things you learned from this article in your own words.
1.) Genetic engineering changes your features.
2.) DNA occurs in the genes of chromosomes.
3.) It is not to soon to figure out how much genetic engineering is applied to man.

What impact would the absence of this process have on humanity. It would have consequences on the human race

Mendel and the mixed up moggie

link: http://environment.newscientist.com/article/mg15220596.000-review--mendel-and-the-mixed-up-moggie.html

Summary:a woman brings home a cat and George should be female, because everyone knows that only females can be calicos (black, red and white) she thinks.

Genetic road to super-immunity

Link:http://www.newscientist.com/channel/health/mg19325921.800-genetic-road-to-superimmunity.html

Summary: In this passage, a man named Mark Origer's life was save by genetic engineering. The doctors took cells from his body, re-implanted them and they destroyed his tumors. He is now living all because of genetic engineering.

Questions:
What process is being used in the article?The removing of cells
What is the purpose of genetic engineering in this article?To remove cells that are not good
List three things you learned from this article in your own words.
1) that genetic engineering can save someone's life
2)that skin cancer can spread to the liver
What impact would the absence of this process have on humanity?If this was not around, then this amn would have died . This process rids the body of bad cells.

Mitosis/Meiosis:Mystery Behind How Nuclear Membrane Forms During Mitosis Solved

Link:http://www.sciencedaily.com/search/?keyword=Cell+Membrane+or+Transport

Summary: The question of how a dividing cell rebuilds the nuclear envelope has been a controversy for the last 20 years. The answer to this issue is important because the knowledge of the envelope is essential to the further regulation of gene expression. The reformation of the nuclear envelope is the most dramatic event during nuclear assembly.

Questions:Mitosis/Meiosis
What are the differences between mitosis and meiosis? Mitosis is the production of a single from cell from two parent cells; Meiosis is the process of comprising two successive nuclear divisions with only one round of DNA.
What problems ca arise if either of these processes is not controlled properly?The body may not functon correctly
List three things you learned from this article in your own words.
1.This issue has been a mystery for 20 years
2.Mitosis and meiosis are very dissimilar
3. Mitosis and meiosis are two kinds of processes
What impact would the absence of this process have on the cell? Cells could not divide successfully

Flowering Plants Evolved Very Quickly Into Five Groups

Link:http://www.sciencedaily.com/releases/2007/11/071126170900.htm

Summary: Scientist report that the two largest group of flowering plants are closer to each other than any other major lineages. These two flowers are the Monocots and the Eudicots. History also showed that diversity of flowering plants took place in a short periods, less than 5 million years ago, resulted in all five major lineages of flowering plants that exist today.

Questions:

How is natural selection or evolution illustrated in this article?
It shows the evolution of the biggest five flowering plants group that originated from the same species.

How does this support Darwin original findings?
It supports the theory Darwin came up with because Darwin thought that it was a mystery how all plants were related and evolved so quickly to produce some of the largest groups of plant.

List three things you learned from this article in your own words.
I learned that plants have been around for at least 130 million years. I learned that their are about 400,000 species of flowering plants. I learned tha five of the largest plant groups originated from one species of plants about 5 million years ago.

What impact would the absence of this organism have on the ecosystem?
Many small animals that eat plants or reproduce by pollination wouldn't survive neither would the ecosystem.

Flowering Plants Evolved Very Quickly Into Five Groups

Link:http://www.sciencedaily.com/releases/2007/11/071126170900.htm

Summary: Scientist report that the two largest group of flowering plants are closer to each other than any other major lineages. These two flowers are the Monocots and the Eudicots. History also showed that diversity of flowering plants took place in a short periods, less than 5 million years ago, resulted in all five major lineages of flowering plants that exist today.

Questions:

How is natural selection or evolution illustrated in this article?
It shows the evolution of the biggest five flowering plants group that originated from the same species.

How does this support Darwin original findings?
It supports the theory Darwin came up with because Darwin thought that it was a mystery how all plants were related and evolved so quickly to produce some of the largest groups of plant.

List three things you learned from this article in your own words.
I learned that plants have been around for at least 130 million years. I learned that their are about 400,000 species of flowering plants. I learned tha five of the largest plant groups originated from one species of plants about 5 million years ago.

What impact would the absence of this organism have on the ecosystem?
Many small animals that eat plants or reproduce by pollination wouldn't survive neither would the ecosystem.

Bacteria Employ Type Of DNA Modification

Link:http://www.sciencedaily.com/releases/2007/12/071203142430.htm

Summary: researchers and others has found out that bacteria employ a type of DNA modification we have never seen before.At first bacteria didnt have a kind of DNA . Now we have found that they my do.

What are the major functions of nucleic acids in the cell?Identifie the DNA

What are the differences in RNA and DNA? RNA acts as a messenger,DNA carries the material

List three things you learned from this article in your own words.Bacteria has DNA, nature has been using phosphorothioate modifications,

What impact would the absence of this organelle have on the cell?It will be a regular bacteria again

Biologists Prove Critical Step In Mebrane Fusion

http://www.sciencedaily.com/releases/2007/04/070417154344.htm

Summary: The article was talking about how membrane fusion is an important step for the passing of items between two cells. The article said membrane fusion is how HIV infect cells. So Membrane fusion is important because of what it can pass on to you.

Questions: Which components of the cell membrane are being discussed in the article? The whole cell membrane itself.
What is the purpose of the process or component in the article. The proces is important because it is the cause of you having HIV and other diseases or isn't.
List three things you learned from the article in your own words. That HIV is passed during this process, that the membrane allows deadly items into your cells sometimes, and that the process in the article is called membrane fusion.
What impact would the absence of this organelle/process have on the cell? the cell would be unprotected from outside diseases and invaders. The cell would eventually die.

Music made to measure from nature's proteins

Link:http://www.newscientist.com/channel/health/dn11775-music-made-to-measure-from-natures-proteins.html

Summary: This article is about how you can translate proteins into a musical form. The "notes" available are the 20 natural amino acids from which all proteins are constructed. The basic concept is simple: assign each amino acid to a different musical note, so leucine could be middle C on the piano, for example, serine could be D, and so on till all 20 have their own note.

What is the major role of this molecule in the cell? Proteins code the information from the genes

List three things you learned from this article in your own words. Different proteins make different sounds, The sounds can be used to identify different proteins, they can use the sounds to make a musical score.

What impact would the absence of this molecule have on the cell? Without Protiens there would be nothing to code the genetic information

The Nucleus and Nucleolus

Link:
http://cellbio.utmb.edu/cellbio/nucleus.htm
http://www.cellsalive.com/cells/nucleus.htm

Summary: The nucleus is in eukaryotic cells. It's a membrane bound organelle. The DNA in the nucleus is in charge of its unique characteristics. The main structure in the nucleus is the nucleolus. The nucleolus produces ribosomes and positions on the rough ER where they synthasize.

Questions:

  1. What is the major function of this cell's organelle? stores, organizes, transports, and produces, basically the control center of a cell
  2. Which cell types have this organelle? animal and plant
  3. List three things you learned from this article in your own words. The nucleus is very important in a cell. It contains a nucleolus. The nucleolus produces ribosomes on the rough ER.
  4. What impact would the absence of this organelle have on the cell? Things in a cell would go wrong.

Dolphins wave weed to attract a mate

Link:http://www.newscientist.com/channel/life/mg19626332.800-dolphins-wave-weed-to-attract-a-mate.html

Summary:Male dolphins in the Amazon River carry weeds to mate. Scientist thought it was a playful behavior but it turns out to be a sexual function.This type of behavior is very unusual for dolphins.

Questions:
What kind of relationship is being described in the article?Mating between dolphins by carrying weeds.
Describe the niche being discussed in the article. Venezuela, Brazil, and Bolivia
List three things you learned from this article in your own words.
1)dolphins mate by carrying weeds
2)this is a sexual function for them
3) this has been going on for a while now
What impact would the topic of the article have on the biosphere?More dolphins will be reproducing because of the new mating calls.

Stretching DNA To The Limit, Ukyla Johnson

http://www.sciencedaily.com/releases/2007/04/070424091417.htm-

DNA strands elasticity is altered by being exsposed toUV light. The small changes in cross linking can very profoundly affect the ability of DNA to recognize specific molecules. It can disrupt its ability to replicate and interact with transcriptional machinary to sythesize proteins. The collegues found out that the viral DNA exposed to UV light are due to the local unwinding of the double helix in some regions arising form the massive formation of crosslinked structures.

What are the major functions of nucleic acids in the cell? The major function of nucleic acid is to store information need for the cell.

What are the differences in RNA and DNA? RNA is a nucluic acid composed of a single strandand distinguished from DNA by comtaining ribose and uracil. DNA is hereditary info in the form of a large moleculecalled deoxyribonucleic acid.

List three things you learned from this article in your own words.I learned that they had examined synthetic DNA to to figure out the limit to which diffrent bases are affected by UV light. I also learned that these were the first measurements that establish a relationship between DNA nanomechanics and damage. One of the colluges belived this paves the way for streach release for spectroscope measurments in DNA dianostics.

What impact would the absence of this organelle have on the cell?If they didn't have the DNA in this, there would be nothing to cause people to get skin cancer from the UV light distorting it.

'Quiet Revolution' May Herald New RNA Therapeutics

http://www.sciencedaily.com/releases/2007/01/070121162811.htm


Summary: RNA plays an important role in synthesis in proteins and the building blocks in our bodies.The Human Genome Project identified about 34,000 genes responsible for producing proteins.Scientists have begun to see 'junk' DNA as having a very important function. Also the DHFR gene produces an enzme that controls thymine production,necessary in rapidly dividing cells.It also could help prevent the growth of neoplastic cancerous cells.

DNA/ RNA

What are the major functions of nucleic acids in the cell?

What are the differences in RNA and DNA?

List three things you learned from this article in your own words.

What impact would the absence of this organelle have on the cell?

For plants on alien worlds, it isn't easy being green

link:http://space.newscientist.com/article/dn11578-for-plants-on-alien-worlds-it-isnt-easy-being-green.html

summary: The greenery on other planets may not be green. the article states Vegetation colour matters and that plants on Earth-sized planets orbiting stars somewhat brighter than the Sun may look yellow or orange, while those on planets orbiting stars much fainter than the Sun might look black. thats why some think that their is plant life out side of the solar system. Plants also absorb green light, but not as strongly, so leaves look green to the eye.

Questions: What is the chemical equation for photosynthesis?6c02 + 12h2o + lightenergy yeilds c6h12o6 +602 + 6h2o
What organelles are involved in this process? chlorophil and chloroplast
List three things you learned from this article in your own words.all plants are not green, some plants are efffected by the stars around them,and their could be plant life on a nother planet.
What impact would the absence of this process have on the biosphere? on ours nothing because this passage was about how it could be efeected in outer space

New Study Finds Biodiversity Conservation Secures Ecosystem Services For People

Link- http://www.sciencedaily.com/releases/2007/12/071205131149.htm

Summary- Healthy ecosystems that provide people with essential natural goods and services often overlap with regions rich in biological diversity, underscoring that conserving one also protects the other, according to a new study.

Questions-What kind of relationship is being described in the article? the relationship of healthy ecosystems and natural goods
Describe the niche being discussed in the article. what humans do to survive in this ecosystem
List three things you learned from this article in your own words. many people are trying to make their places ecologically better, it improves well-being, the world's ecosystem services cost alot of money
What impact would the topic of the article have on the biosphere? how conservation could help improve your ecosystem and you can live better

New Insight Into HIV Infection

Link: http://www.sciencedaily.com/releases/2007/05/070504131255.htm

Summary:Scientist have found a new way to fight against AIDS. Scientist learned that HIV infects the nucleus of a cell by carrying its DNA to the cell nucleus. The viral DNA mix with the cell DNA, this creates more proteins that make new viruses,and then spread to other cells. The way in which HIV is spread throughout the cell by entering the nucleus may provided a way of limiting the spread of the virus to other cells.

Questions:
What is the major function of this cell's organelle? To carry the DNA of the cell and instructions of the cell.

Which cell types have this organelle? Eukaryote Cells

List three things you learned from this article in your own words. I learned that with father studying the HIV may never turn to AIDS in some cases. I learned that HIV spreads by making proteins that infect the cells. I learned that by silencing certain genes scientist decreased the production of the HIV producing proteins by three times less.

What impact would the absence of this organelle have on the cell? The cell would not function or have codes for the DNA structure.

Protein Found To Shield Pancreatic Cancer Cells From Self-destruction

Link:http://www.sciencedaily.com/releases/2007/03/070320095656.htm

Summary: This article is about An over expressed protein that protects human pancreatic cancer cells from being forced to devour themselves, removing one of the body's natural defenses against out-of-control cell growth.

What is the major function of this cell's organelle? The major function of this organelle is to protect human pancreatic cancer cells from devouring themselves

Which cell types have this organelle? eukaryote

List three things you learned from this article in your own words. A protein can protect cancer cells, cancer cells devour themselves, cells can die from stress.

What impact would the absence of this organelle have on the cell? the cancer cells would continue to devour themselves

Biologists prove critical step in membrane fusion

Link: http://www.sciencedaily.com/releases/2007/04/070417154344.htm

Summary: This article talks about membrane fusion. It also talks about how membrane fusion works and how it can be done. It also talks about how membrane works and how it fuses and affects cells.

Questions: Which components of the cell membrane are being discussed in the article?
What is the purpose of the process or component in the article. It is to inform you about membrane fusion and how it works and affects the cell.
List three things you learned from the article in your own words. 1. I learned about membrane fusion and how it works. 2. I learned how membrane fusion can affect a cell. 3. I learned about some of the dideases that are cause by membrane fusion.
What impact would the absence of this organelle/process have on the cell? It causes the cell to mutate and spread very quickly. Membrane fusion is also how HIV is spreaded, because the cell mutates and spreads to othr parts of the body quick.

A New Brake On Cellular Energy Production Discovered

http://www.sciencedaily.com/releases/2007/07/070727091009.htm

Summary: The article was talking about how scientists have found a way to slow down cellular energy production. Scientists found new mitochondrial factors that can slow down the production of this process. This new discovery could lead to new ways of treating diseases in the future.

Questions: What is the chemical equation for cellular respiration? O2+C6H12O6 -->CO2+H2O
What organelles are involved in this process? Mitochondrial DNA and mtDNA
List three things you learned from this article in your own words. Cellular respiration can be regulated, that it produces energy for the cell, and that this discovery can spur new ways of treating various diseases later on.
What impact would the absence of this process have on the biosphere? It wouldn't have an effect if it takes in the same amount of carbon-dioxide as it did oxygen.

Stretching DNA To The Limit

Link- http://www.sciencedaily.com/releases/2007/04/070424091417.htm


Summary- It has long been known that UV light can damage DNA, reducing its ability to replicate and interact with proteins, and often resulting in the development of skin cancers. However, not much is known about how the elasticity of DNA strands is altered upon exposure to UV light. Now a group of researchers at Duke University have developed a method to measure changes in the mechanical properties of DNA upon irradiation with UV light.

Questions-What are the major functions of nucleic acids in the cell? to tell the cell what to do
What are the differences in RNA and DNA? DNA contains Thymine, RNA contains Uracil
List three things you learned from this article in your own words. dna tell cell what to, UV light can damage dna, scientist can stretch dna while measuring the forces generated
What impact would the absence of this organelle have on the cell? cells would just float around in the body and be useless

Natural Selection/Evolution:Quantum States Undergos Natural Selection

Link:http://www.newscientist.com/channel/fundamentals/mg19426104.700-quantum-states-undergo-natural-selection.html

Summary:Charles Darwin should be very honored to have his ideas on natural selection help resolve one of the most troubling questions in quantums mechanics. In quantum mechanics particles exist in so-called supersposition states in which they have many mutual contradictory properties.

Questions:Natural selection/Evolution
How is natural selection or evolution illustrated in this article? By answer troublesome questions
How does this support Darwin original findings? It answers questions that have been around for a long time
List three things you learned from this article in your own words.
1.Charles Darwin's ideas are finally being put into good use
2.Experiments have led to new discoveries
3.Questions from long ago are now helping current issues
What impact would the absence of this organism have on the ecosystem? Certain questions will not be answered

New Way To Identify, Evolve Novel Enzymes

http://www.sciencedaily.com/releases/2007/08/070815135116.htm

Summary: Enzymes are specialized molecules that accelerate chemical reactions between molecules. Proteins and other chemicals that underlies biological activities need the help of enzymes. The development of new enzymes can help improve chemicals, and develop new therapies. The new way of creating enzymes does not require understanding of how the enzymes work.

What reactions does this enzyme catalyze? It makes a chemical reaction

How is the cell affected if this enzyme is removed? It slows down the chemical reactions

List three things you learned from this article in your own words.
1.) The creation of totally new enzymes can develop new therapies.
2.) Creating enzymes does not require knowing how the enzyme work.
3.) Enzymes can help improve the chemicals.

What impact would the absence of this molecule have on the cell? It would slow the cell down

Termite tummies give scientists something to digest

Link:http://www.newscientist.com/channel/life/mg19626315.300-termite-tummies-give-scientists-something-to-digest.html

Summery:Termites eat and digest wood.Termites use special enzymes to break down the tough wood that they eat and make it into suger.This would seem simple but its not.This stomach of the Termites is very complex and has several hundred species of symbiotic bacteria in it.

Questions:What reactions does this enzyme catalyze?The digestion wood and turing it into suger.
How is the cell affected if this enzyme is removed?It couldnt make suger from wood.
List three things you learned from this article in your own words.Termites make suger from wood, they have several bacteria in its body, and it east wood for food
What impact would the absence of this molecule have on the cell?The cell wouldnt get suger from the wood and termites wouldnt eat it.

Aritic climate change

link:http://environment.newscientist.com/channel/earth/dn12794-polar-expedition-to-record-shrinking-arctic-ice.html

Summary: when a brittish man plans to walk or swim a 2000 kilometre journey to the North Pole as part of an attempt to draw up an accurate prediction of when the Arctic ice cap will disappear. they think the ice will completely melt away vary from 2030 to 2100.

Questions:
What are some ways this phenomenon could be stopped?N/A
Is there anything you could do to contribute to the reversal? no
List three things you learned from this article in your own words.The only way to get an gauge of the ice thickness is to take ground base,and Submarine radar can only measure ice thickness below the water line.
What impact would the continuance of these process have on the biosphere ?it may flood and it could even flood the earth

'Wiring Up' Enzymes For Producing Hydrogen In Fuel Cells

Link- http://www.sciencedaily.com/releases/2007/11/071119100338.htm



Summary- Researchers in Colorado are reporting the first successful "wiring up" of hydrogenase enzymes. Those much-heralded proteins are envisioned as stars in a future hydrogen economy where they may serve as catalysts for hydrogen production and oxidation in fuel cells



Questions- What reactions does this enzyme catalyze? increase in hydrogen for cell
How is the cell affected if this enzyme is removed? no good connections with fuel cell components
List three things you learned from this article in your own words. scientist mess with alot of things, enzymes help the cell and precious metals are needed for this process
What impact would the absence of this molecule have on the cell?

Researchers study role of natural organic matter in environment

Link: http://www.sciencedaily.com/releases/2006/12/061211221222.htm

Summary: This article talks about organic matter in the environment. It also talks about how this type of organic matter plays an important role in the environment. This article is mainly about organic matter and how researchers have been studying it.

Questions: What is the major role of this molecule in the cell? Provides oxygen for the cell

List three things you learned from this article in your own words. 1. I learned about how organic matter works. 2. I learned how it works in cells. 3. I learned how researchers study organic matter, and how it is an important pary of the environment.
What impact would the absence of this molecule have on the cell? It causes the cell to produce oxygen, and the other organic compounds it needs to function properly.

Progress Toward Artificial Photosynthesis?

http://www.sciencedaily.com/releases/2007/03/070312152123.htm

This article is about how plants can practice of artificail photosynthesis. Scientist help the plants by giving them a metal catalysts. It help speeds up and is capeable of greaking down C-O into CO2. They also used metal free catalysts and see what it would do.

What is the chemical equation for photosynthesis? CO2 + H2O + light enerdy= ( CH2O)+ O2
What organelles are involved in this process? cell membrane, cell wall, cytoplasm, chorophylls.
List three things you learned from this article in your own words. Plants could make artificial photosynthesis. Use many organelles in the process. It is just as good as regular photosynthesis.
What impact would the absence of this process have on the biosphere? It would make all the hard work of the team good for nothing but there would still natural photosynthesis.

Advance Made In Search For Genes Associated With Colon Cancer

Link:http://www.sciencedaily.com/releases/2007/07/070708173046.htm

Colon Cancer is one of those diseases that are passed down genetically. Perhaps not through every generations, but it really shows up in people whose family has a history of colon cancer. That's how you can link the two.

Genetic Engineering
What process is being used in the article?primordial soup
What is the purpose of genetic engineering in this article? to make a genetic discovery
List three things you learned from this article in your own words.I learned that colon cancer is genetic, I learned that there are alot of discoveries in this area, finally, I learned that you can use several methods to find the specific gene.
What impact would the absence of this process have on humanity?we wouldn't know much abou these diseases.

Climate changes

Link:http://environment.newscientist.com/article/mg19626333.800-stormy-weather-ahead-for-us.html





It is expected to be more extreme storms, floods, tornadoes, hurricanes, and wildfires in the years to come because of global warming. This means that people should be getting ready for this.





What are some ways this phenomenon could be stopped? By not polluting the air
Is there anything you could do to contribute to the reversal? You can contribute by keeping a clean environment, and recycling, and trying not to pollute the environment.
List three things you learned from this article in your own words. I already have heard of this so I really didn't learn anything.
What impact would the continuance of these process have on the biosphere? It would cause everthing to go bad.

Good Behavior, Religiousness May Be Genetic

Link:http://www.sciencedaily.com/releases/2007/04/070405170133.htm

Summary: A new study shows that good behavoir my be passed genetically not by religion.After studying the behavoirs of two adults twins. They had found, while altruistic behavior and religiousness tended to appear together.

Mendel and Genetics
Explain the phenomenon being described in the article.behavoir is a trait that is passed

What is the difference between a genotype and a phenotype?Genotype is the formular,Phenotype is the apperence

List three things you learned from this article in your own words.Behavoir is passed, no specif gene for religion,individuals do have biological predispositions

What impact would the not understanding genetics have on medicine or agriculture?There will be less medicine and food

New Way To Identify, Evolve Novel Enzymes

The intricate interplay of proteins and other chemicals that underlies most biological activities requires the participation of enzymes, specialized molecules that accelerate chemical reactions between molecules. The creation of totally new enzymes can help improve the synthesis of chemicals and pharmaceuticals, devise new tools for molecular biology research, and develop new therapies. If a particular protein induced the RNA substrates to join, resulting in a significantly larger molecule, that signified the protein was an active enzyme.The investigators could select out the larger RNA strands, generate more of the enzymes, and repeat the experiment. The induction of random mutations to produce different forms of the enzymes and reducing the time allowed for the splicing reaction enabled the development of more efficient versions by means of guided evolution.

What reactions does this enzyme catalyze? Chemical reaction
How is the cell affected if this enzyme is removed?
List three things you learned from this article in your own words. protein, RNA, Chemical reaction.

What impact would the absence of this molecule have on the cell?DNA.

How Does The Antitumor Drug Get To The Cell Nucleus?

http://www.sciencedaily.com/releases/2007/11/071102094343.htm

Summary: The article is talking about how the antitumor drug cisplatin get to the nucleus. It passes through the cell membrane and then it finds its way to the nucleus. The article was saying how this process was completed, along with how it ends up getting to the nucleus.

Questions: What is the major function of this cell's organelle? to hold the genetic information of the cell.
Which cell types have this organelle? Eukaryotes
List three things you learned from this article in your own words. That Antitumor drugs can make it to the nucleus, that cisplatin is divided into three segments, and that it first passes throught the cell membrane.
What impact would the absence of this organelle have on the cell? There would be no genetic information in the cell and the information would be scrambled.

'Wiring Up' Enzymes For Producing Hydrogen In Fuel Cells

Link:
http://www.sciencedaily.com/releases/2007/11/071119100338.htm

Summary:
There is a successful electrical connection between a carbon nanotube and hydrogenase. Hydrogenases show as a powerful catalysts. They can be used for hydrogen in fuel cells, which can produce electricity no pollution for motor vehicles, portable electronics, and other devices. Scientist have dound difficulty in putting these enzymes into electrical devices. They do not form good electrical connections. Metals such as platinum are needed to perform. They combined hydrogenase enzymes with carbon nanotubes, submicroscopic strands of pure carbon to make sure that they are good electrical conductors.

Questions:
  1. What reactions does this enzyme catalyze? hydrogen in fuel cells, no pollution for motr vehicles, portable electronics, and other devices
  2. How is the cell affected if this enzyme is removed?
  3. List three things you learned from this article in your own words. These enzymes can be used to decrese pollution in cars. There were difficulties in doing this. It was finaaly fixed whrn they combined other elements.
  4. What impact would the absence of this molecule have on the cell? more pollution

Failing protection of Africa's National Parks

Link: http://www.sciencedaily.com/releases/2007/08/070830105915.htm


Summary: This summary is about Africa's national parks. It talks about how some of the animals are disappearing. Also, it talks about how their environment is changing in the park and some of the problems the park is facing.


Questions: What kind of relationship is being described in the article? It is talking about the animals and their environment that they live in.
Describe the niche being discussed in the article. The niche is very diverse, and it includes many different kinds os animals.
List three things you learned from this article in your own words. 1. I learned about Africa's national park. 2. I learned about some of the animal's that are found at the park. 3. I learned about the park and why the environment is changing.
What impact would the topic of the article have on the biosphere? All of the animals in the national park would start to decline.

Cellular Respiration

Link-http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/CellularRespiration.html

Summary- Cellular respiration is the process of oxidizing food molecules, like glucose, to carbon dioxide and water. The energy released is trapped in the form of ATP for use by all the energy-consuming activities of the cell.The process occurs in two phases:
glycolysis, the breakdown of glucose to pyruvic acid
the complete oxidation of pyruvic acid to carbon dioxide and water

Questions- What is the chemical equation for cellular respiration? C6H12O6 + 6O2 --> 6CO2 + 6H2O + energy
What organelles are involved in this process?
Some biochemical pathways that produce very little ATP occur in the cytoplasm
Other pathways that produce a great deal of ATP occur in the mitochondrion
List three things you learned from this article in your own words. mitochondrion has much to do with cellular respiration, makes energy for cell, cytoplasm also makes ATP
What impact would the absence of this process have on the biosphere?

Scientists Offer New View Of Photosynthesis

Link:http://www.sciencedaily.com/releases/2007/05/070503140651.htm

Photosynthesis is a process by which plants convert carbon dioxide into energy and sugar using sunlight. This puts oxygen back into the atmosphere for us to breathe. They've used this process ever since the dawn of time when plants first emerged.


Photosynthesis
What is the chemical equation for photosynthesis?6 H2O + 6 CO2 = C 6H12 O6 + 6O2
What organelles are involved in this process?leaves , chlorolplasts
List three things you learned from this article in your own words.Photosynthesis is a process for plants to gain energy, they use sunlight, and all plants use it.
What impact would the absence of this process have on the biosphere?oxygen wouldn't be recycled and put back into the atmosphere.

GM virus shrinks cancer tumours in humans

Link:http://www.newscientist.com/channel/health/dn12839-gm-virus-shrinks-cancer-tumours-in-humans.html

Summary: The article opens by telling us that a virus engineered to target cancer tumours has shown promising results in treating liver cancer in a small, early-stage clinical trial. Since the early 1990s researchers have tried using modern genetic engineering to tailor viruses to specifically infect and destroy cancer cells. But some experts say the specially designed viruses do not replicate fast enough within tumours to have a big impact.

What process is being used in the article? Engineering viruses to target cancer tumors.

What is the purpose of genetic engineering in this article? To help eliminate cancer tumors.

List three things you learned from this article in your own words. Viruses can help shrink tumors, rabies vaccination can shrink tumors, This process has been worked on for 17 years.

What impact would the absence of this process have on humanity? Without this process patients with tumors will have to wait longer until they find another way to shrink the cells.

Protein Enables Discovery Of Quantum Effect In Photosynthesis, Ukyla Johnson

http://www.sciencedaily.com/releases/2007/05/070502120327.htm-

There is a protien called a taco shell protien. It's ribbon like protien wraps around three clusters of seven chlorophylls, just like a taco shell around ground beef. The protein, comes from a photosynthetic bacteria that lives in extremely high, high temps. Teh taco shell is the most studied protein in a photosythesis. Researchers refer to this as the antenna system. That is molecules thta efficiently transfer energy from light in a cascade.

What is the chemical equation for photosynthesis?
CO2+H2O+Light Energy=(CH2O) +O2

What organelles are involved in this process?
Chlorplasts and Ribosomes

List three things you learned from this article in your own words.
I learned that they transfer energy through wavelengths with extreme accuracy. I learned that in the many areas of pahse space can be sampled effectively to find the most efficent path for energy to pass.

What impact would the absence of this process have on the biosphere? It would cause a world wide wipe out of many people and plants because they wouldn't have any food or carbon dioxide to breathe. Also the animals would die as well.

Climate Change Predicted To Drive Trees Northward

http://www.sciencedaily.com/releases/2007/12/071203090131.htm


Summary:In North America climate is expected to change this century that could cause ranges to shift northward and shrink them about half.ranges may decrease sharply if trees cannot disperse in altered conditions. Two climate change scenarios were modeled. One assumed that carbon dioxide emissions would start to decrease during the coming century.


Climate Change

What are some ways this phenomenon could be stopped? By keep doing experiments or methods to stop it but trees do that.

Is there anything you could do to contribute to the reversal. No

List three things you learned from this article in your own words.that trees can move and respond to the climate. I also learned that cliamte also has a bid affect on trees and the way the move.

What impact would the continuance of these process have on the biosphere? That the trees wil start decreasing.

Improving Liver Cancer Diagnosis

Link:http://www.sciencedaily.com/releases/2007/10/071005104036.htm

Summary: The most common type of liver cancer is hepatocellular carcinoma. It causes about one million deaths each year. A lot of people die because the therapies are limited which causes scientists to look for proteins inside the body.

Questions:
What is the major role of this molecule in the cell? To identify the presence of liver cancer.

List three things you learned from this article in your own words.
1) PROTEINS ARE USED TO FIND THE DISEASE
2)PROTEINS ARE USED TO IMPROVE THE DIAGNOSIS
3)HEPATOCELLULAR CARCINOMA IS A TYPE OF CANCER
What impact would the absence of this molecule have on the cell? The disease would not be able to be identified .

Cellular Respiration: The Gigantic Respiration of Crystalline Solids

Link:http://www.newscientist.com/search.ns?doSearch=true&query=genetic+engineering

Summary: Chemists have discovered a new group of solids capable of a threefold increase in volume when they absorb liquids. The phenomenon of respiration is normally associated with life. However, inorganic matter is very often associated with the idea rigidity and non-deformability.

Questions:Cellular Respiration
What is the chemical equation for cellular respiration? C6H1206 + 6O2 --> 6co2 + 6H2O + energy
What organelles are involved in this process? cell membrane, cytoplasm, nucleus, etc.
List three things you learned from this article in your own words.
1. A new cellular respiration invention has been discovered.
2. Solids can now abosrb liquids due to this new discovery.
3. The new invention can help the biosphere
What impact would the absence of this process have on the biosphere?Solids are capable of absorbing liqiuds

New Telomere Discovery Could Help Explain Why Cancer Cells Never Stop Dividing

http://www.sciencedaily.com/releases/2007/10/071004143131.htm

Summary: The article was talking about how scientists found RNA in the Telomeres in DNA. The scientists believe that now they have found the RNA they can find out the function of Telomeres. Now that gives scientist hope because Telomeres causes cancer cells to become immortal. With this new discovery maybe they can hopefully find a way to stop this from happening.

Questions: What are the major functions of nucleic acids in the cell? to hold the genetic information of the cell.
What are the differences in RNA and DNA? DNA is doulble stranded and RNA is single stranded.
List three things you learned from this article in your own words. That scientists are working hard to stop the mutation of cancer, Also that Telomeres cause immortal cells, and that RNA was found on a DNA strand.
What impact would the absence of this organelle have on the cell? No Genetic material or no information would be held. THe organism would be in trouble.

Unlocking The Function Of Enzymes

http://www.sciencedaily.com/releases/2007/11/071106164755.htm

This article is about how to determine which molecule triggers a enzyme into an action. A team from Texas A&M has come up with a new technique in determining this. They run test measure the enzymes on a scale and rank them in order. The team uses X-rays in their new technique.

What reactions does this enzyme catalyze? This is the reason for thier experiments and trying to find out how an enzymes reacts.
How is the cell affected if this enzyme is removed? Thats what the team is tryin to find out.
List three things you learned from this article in your own words. That figuring out how an enzyme reacts could lead to a new drug. That is the first time the technique is being preformed. Mite could save lives.
What impact would the absence of this molecule have on the cell? Mite lead to cure to canser or cause canser.

Rare Tibetan Antelope Listed As Endangered

Link-http://www.sciencedaily.com/releases/2006/03/060330162747.htm

Summary- The Bronx Zoo-based Wildlife Conservation Society (WCS) today applauded a decision today by the U.S. Fish and Wildlife Service to list the Tibetan antelope, also known as "chiru," as an endangered species. Through a series of expeditions to China's windswept Chang Tang Reserve over the past two decades, WCS had played a key role in sounding the alarm about the dramatic decline of this elegant animal due to poaching.

Questions-
Why is this species endangered? from poaching
What could prevent this organism from going extinct? less poaching and laws passed to stop the hunting of this animal
List three things you learned from this article in your own words. if animals go extinct many things could go wrong, fur is worth $15,000 on the black market, laws can be passed to stop the hunting of endabgered species
What impact would the absence of this organism have on its ecosystem/community? less ground would be fertilized and ground would be useless dirt

Climate Change Impacts Stream Life

Link:
http://www.sciencedaily.com/releases/2007/05/070504101355.htm

Summary:
Climate change is affecting streams and rivers. Streams and rivers are likely to be highly sensitive to climate. Climate change is also affecting the habitat of some animals living in those streams or rivers. Studies predict that every degree the temperature rises 21% of the stream decreses. The number of species could also decrease 12-25% in the next 50 years. The climate change also causes other problems such as effects of acid rain.

Questions:
  1. What are some ways this phenomenon could be stopped? we cant really change the climate. But we could not pollute the streams and rivers and that possibly could help.
  2. Is there anything you could do to contribute to the reversal? stop pollution maybe
  3. List three things you learned from this article in your own words. It is affecting our streams and rivers. It alsl affecting habitat to some animals. The number of species could decrease alot over time.
  4. What impact would the continuance of these process have on the biosphere? No more species in river or streams, thr drying up of river or streams

Gizmo

link:http://www.newscientist.com/article/mg19626315.800-gizmo.html

Summary:this passage was about the envintion to stop catching endagerd fish with a special net because netted hadock never swim down the net should allow clever critters to escape.

Questions:
Why is this species endangered?Fishing boats haul in many creatures besides the catch they want, including endangered animals such as dolphins and fish
What could prevent this organism from going extinct?designed a net with hatches at the bottom that should retain the haddock but let cleverer critters escape.
List three things you learned from this article in your own words.netted haddock never swim downwards.
What impact would the absence of this organism have on its ecosystem/community?it would effect the whales and other sea creaters that depend on it but not in a grave way.

Progress toward artificial photosynthesis?

Link: http://www.sciencedaily.com/releases/2007/03/070312152123.htm


Summary: This summary is about photosynthesis and how it works in plants.
It also talks about the process and the steps that plants go through to do photosynthesis. It also talks about artificial photosynthesis and if it can be done in plants.

Questions: What is the chemical equation for photosynthesis? Co2+H20+light energy= (CH2O) + O2
What organelles are involved in this process? chloroplasts
List three things you learned from this article in your own words. 1. I learned how photosynthesis works ion plants. 2. I learned how plants used photosynthesis to get their food. 3. I learned whether or not plants could use artificial sunlight.
What impact would the absence of this process have on the biosphere? Plants would be able to start using artificial photosynthesis.

'Wiring Up' Enzymes For Producing Hydrogen In Fuel Cells

Link:http://www.sciencedaily.com/releases/2007/11/071119100338.htm

Scientists report a successful test of hydrogen fuel. They used enzymes to produce an electrical connection between a carbon nanotube and a hydrogenase. This could produce electrical fuel for the future. But, this is still being tested in order to work out some difficulties.

Enzymes
What reactions does this enzyme catalyze?a carbon nanotube and a hydrogenase
How is the cell affected if this enzyme is removed?doesn't work
List three things you learned from this article in your own words.there are difficulties, this could be used as fuel, they are still testing.
What impact would the absence of this molecule have on the cell?wouldn't work

Nanoelectrodes could provide bird flu test

Link:http://technology.newscientist.com/channel/tech/dn12999-nanoelectrodes-could-provide-bird-flu-test.html


Summary: The article opens describing finding the presence of specific genes could be as as hard as finding a needle in a haystack but new technology could put an end to that. To do this they wire a DNA strand up to a pair of nanotube electrodes and feed electricity through it. Since DNA with non matching base pairs lets considerably less current flow through it than a pair of matching strands, so they can use this to find certain genes.

What are the major functions of nucleic acids in the cell? To carry genetic information or form structures within the cell.

What are the differences in RNA and DNA? RNA is single stranded while DNA is double, while DNA contains deoxyribose, RNA contains ribose.

List three things you learned from this article in your own words. Electricity can be used to find certain genes, a 27 nm gap is the length of a segment of 80 base pairs of DNA, DNA with non-matching base pairs lets considerably less current flow through it than a pair of matching strands.

What impact would the absence of this organelle have on the cell? Cells woudlnt be able to carry any information to their host.

Scientists Successfully Simulate Photosynthesis And Design A Better Leaf

Link: http://www.sciencedaily.com/releases/2007/11/071109123201.htm

Summary- University of Illinois researchers have built a better plant, one that produces more leaves and fruit without needing extra fertilizer. The researchers accomplished the feat using a computer model that mimics the process of evolution. Theirs is the first model to simulate every step of the photosynthesis process.

Questions- What is the chemical equation for photosynthesis?
6CO2 + 6H2O ------> C6H12O6 + 6O2
What organelles are involved in this process? Most photosynthesis occurs in a plant’s leaves.
List three things you learned from this article in your own words. that scientist can alter plants, where photosynthesis mainly occurs and how environmental changes effect photosynthese
What impact would the absence of this process have on the biosphere? better land because this plant doesn't use all of nutrients out of the earth like normal plants do