Showing posts with label Kim Felton. Show all posts
Showing posts with label Kim Felton. Show all posts

Tuesday, December 11, 2007

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

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

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

Monday, December 10, 2007

Photosynthesis:How Planet Earth Turned Green

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

Summary:In this article photosynthesis is portryaed as th reason Earth was formed. About 2.3 billion years ago the Earth was covered with a thick coating of ice. When strong oxidants were released(due to photosynthesis) the frozen ice thawed out. Strong oxidants were released into the ocean and the atmosphere.

Questions:Photosynthesis
What is the chemical equation for photosynthesis?6 H2O + 6CO2 --> C 6H12 O6 +6O2
What organelles are involved in this process? Chloroplasts
List three things you learned from this article in your own words.
1.Photosynthesis is a vital process in living things on Earth
2.Photosynthesis was involved in the formation of the Earth
3.The Earth was covered with ice before photosynthesis interferred
What impact would the absence of this process have on the biosphere?The Earth would have limited oxygen supply

Cell Organelles: Nanotube-Tipped Probe Considered Vital for Cell Treatment

Link:http://www.sciencedaily.com/releases/2007/04/070409213503.htm

Summary: Researchers have discovered a carbon nanotube-tipped pipettes that could become key to cell biology in-situ DNA sequencing and organelle-targeted drug delivery. This invention enables DNA to be examined inside a living cel without removing the cell from the living tissue.

Questions:Cell Organelles
What is the major function of this cell's organelle?
Which cell types have this organelle? It is in different regions inside the cell
List three things you learned from this article in your own words.
1. Pipettes have the ability to transfer liquids
2. Enables DNA to be examined inside a living cell
3.Can enhance cell treatment
What impact would the absence of this organelle have on the cell? A person can now examine DNA inside a cell

Ecology: 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: An ecological trait of dolphins in way that they attract mates are unique. Experts say dolphins wave the weed that they carry as a mating call. Item carrying is a way of living for dolphins being that it helps dolphins obtain important things. It especially used as a sexual techinique to attract a mate.

Questions:Ecology
What kind of relationship is being described in the article? the relationship between dolphins and their methods of finding a mate.
Describe the niche being discussed in the article. Dolphins found in prts of Venezuela, Brazil, and Bolivia
List three things you learned from this article in your own words.
1.Ways in which dolphins attract mates
2.Dolphins carry sea weed
3. Way in which dolphins reproduce
What impact would the topic of the article have on the biosphere? Production of more dolphins beginning with mating calls

Climate Change: War has history links to global climate change

Link:http://environment.newscientist.com/channel/earth/dn12936-war-has-historic-links-to-global-climate-change.html

Summary: Study shows that climate change started to take place over 500 years ago. Climate change has recently been thought to have been linked to war. In the future climate change may result in widespread global unrest and conflict. Some climate changes are said to have something to do with the crop yields. Climate change is also affecting such factors such as rising sea levels and food shortages(which goes along with shortages of crops).

Questions:Climate Change
What are some ways this phenomenon could be stopped? Climate can not really be controlled unless it is a change such as global warming
Is there anything you could do to contribute to the reversal. Conserve any source of energy when possible
List three things you learned from this article in your own words.
1.Climate is affecting humanity in many ways
2.Climate has a major influence on crops and plants
3.Climate problems can be solved easier than a person may think
What impact would the continuance of these process have on the biosphere?Change in farmers methods and techniques. Certain climate conditions are not good for crops and plants.

Endangered Species: More bear species threatened with extinction

Link:http://environment.newscientist.com/channel/earth/dn12904-more-bear-species-threatened-with-extinction.html

Summary: In the article bears are an important topic in today's time. There are only two bears of a certain species that are still not threatened by extinction. This species is listed as "least concern" by experts. Experts say that if it was not for bears being left out in the wild the population would drop unexpectedly. Some of the species habitats have declined causing the popultaion of bears to do the same.

Questions: Endangered species
Why is this species endangered? The bears are left in the wild and are being hunted
What could prevent this organism from going extinct? Smaller number of hunters
List three things you learned from this article in your own words.
1. Bears are at stake of severe extinction
2.Hunters are the main cause of the extinction
3.The popultaion of the bears is dropping everyday
What impact would the absence of this organism have on its ecosystem/community? Larger population of bears

DNA/RNA: Silenced genes can no longer stay hidden

Link: http://www.newscientist.com/home.ns

Summary: DNA have recently been hidden leaving scientist with no way to find out more information about a certain disease. Now, however, a program has been designed to help scientist defeat the hidden DNA. The program teaches itself how to recognize the DNA patterns in silenced genes. As mammals, we have two copies of genes; one from the mother and the other from the father. When one of the genes are occasiopnally silenced it is recessive and can lead to diseases. The invention of this new DNA program is a helpful tool for scientist to help the human nature.

Questions: DNA/RNA
What are the major functions of nucleic acids in the cell? Transfers information from the nucleus
What are the differences in RNA and DNA?DNA- Deoxyribonucleic Acid=DNA; transfer information in general. RNA=Ribonucleic Acid; RNA transfers any information in DNA.
List three things you learned from this article in your own words.
1. Scientist have found a new program to further their knowledge of the impact of DNA on human diseases.
2.Some genes can be hidden or recessive
3.The recessivness of a gene may lead to diseases
What impact would the absence of this organelle have on the cell? Essential information would not get into the brain and the body would not function correctly.

DNA/RNA: Silenced genes can no longer stay hidden

Link:http://www.newscientist.com/search.ns

Summary: DNA have recently been hidden leaving scientist with no way to find out more information about a certain disease. Now, however, a program has been designed to help scientist defeat the hidden DNA. The program teaches itself how to recognize the DNA patterns in silenced genes. As mammals, we have two copies of genes; one from the mother and the other from the father. When one of the genes are occasiopnally silenced it is recessive and can lead to diseases. The invention of this new DNA program is a helpful tool for scientist to help the human nature.

Questions: DNA/RNA
What are the major functions of nucleic acids in the cell? Transfers information from the nucleus
What are the differences in RNA and DNA?DNA- Deoxyribonucleic Acid=DNA; transfer information in general. RNA=Ribonucleic Acid; RNA transfers any information in DNA.
List three things you learned from this article in your own words.
1. Scientist have found a new program to further their knowledge of the impact of DNA on human diseases.
2.Some genes can be hidden or recessive
3.The recessivness of a gene may lead to diseases
What impact would the absence of this organelle have on the cell? Essential information would not get into the brain and the body would not function correctly.

Photosynthesis: How planet Earth turned green

Link:http://www.newscientist.com/home.ns

Summary:Questions:Photosynthesis
1.)What is the chemical equation for photosynthesis?6 H20 + 6 CO2 --> C 6 H 12 O 6 + 6O2

2.)What organelles are involved in this process? chloroplasts

3.) List three things you learned from this article in your own words.
1a.That photosynthesis is a vital process in living things on Earth.
2b. Photosynthesis was involved in the formation of Earth.
3c. The Earth was covered with ice before photosynthesis interferred.

4.)What impact would the absence of this process have on the biosphere? The Earth would have limited oxygen supply.