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Which explains the outcome of both vertical and lateral gene transfer? leads to rapid evolution of a population increases variability in a population outcomes in large changes to the genetic code ta
The reaction is an enzyme mediated reaction (A yields B+C) What happens when we employ equal amount of the enzyme and eliminate the products as they are produced ?
What is the typical pH of the adult female's vagina? How is this pH maintained? Women who are on antibiotics can often develop a vaginal yeast infection. Describe why this can occur.
Streptokinase is frequently adminsistered during a heart attack. Explain why might this be the case? Would this cause an infection in the patient? Describe.
Why can the improper use of triclosan products be dangerous? Explain how does triclosan work?
Which sterilization process would be the most efficient to sterilize nutrient agar which is to be used in the microbiology laboratory?
What will happen to the cells of Escherichia coli (an organism which genearlly grows in your intestine) if they were suddenly suspended in a solution of 20% NaCl? Describe.
Listeria monocytogenes infections are frequently transmitted via contaminated food. A person who has contracted listeriosis generally has a high fever, muscle aches, and gastrointestinal problems lik
Some of the gram negative bacterial cells which are considered non-autolytic, which means they will not lyse or break down instantly after cell death.
The antibiotic penicillin interferes with transpeptidation of the peptidoglycan cell wall. In simple terms expain what this means. Give three reasons why this leads to lysis of the cell. During whic
How would a strain of Escherichia coli look beneath a microscope if it had a mutation which inactivated the protein MreB compared to a strain that had a fuctional MreB? Describe two ways that the la
Name the version of iron which would predominate in early Earth conditions? Describe why. Which version of iron predominates today? Describe why. Outline the process by which modern bacteria obtain i
Please write down a 500-700 word scientific assessment report, summarizing at least two risks and two advantages of transgenic organisms to Canadians in EITHER agriculture or medical applications. U
Given the damage to a nuclear power plant caused by the earthquake and tsunami and the real and potential danger of radiation leak, proposed to the CEO of an utility company whether it must con
In a water molecule, the oxygen atom consists of a slighty negative charge and the hydrogen atoms have a slightly positive charge. this charge difference gives increase to which type of bond between
What proportion of the eggs of an F1 female will carry the gene for half color?
Write down are animal "body plans"? What types of animal body plans are there? What are some basic trends in animal evolution (three or four)?
Analyze the significance of jaws in fishes, as it related to evolution.
Explain how the science of clasdistics is employed to produce cladograms.
What have been several causes of extinctions in the history of life on earth? What happens after mass extinction?
Describe the terms deuterostomes and protostomes, and how are these concepts helpful in biology? (Forget which opening comes first in development. The concept is much more profound than that!)
Write down the impacts of desertification, deforestation, and pollution in the air?
Find a published figure (like: magazine, newspaper, or peer-reviewed journal) which somehow misrepresents some aspect of biology. Scan this with a short explanation as to how it misrepresents the biol
The concentration of a toxic chemical is magnified 10-times at each trophic level. What will be its concentration in organisms at the 5th trophic level if producers store the substance at concentrati
Yellow-haired mice interbreed and produce progeny with a 2:1 ratio of yellow to nonyellow. When yellow is crossed with nonyellow, a 1:1 ration of the two classes is obtained. Nonyellows interbreed t