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.
Showing posts with label Roger Perez. Show all posts
Showing posts with label Roger Perez. Show all posts
Wednesday, December 12, 2007
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.
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.
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.
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.
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.
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.
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.
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.
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
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
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