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Q1. Activation of T cells requires that antigens be presented from antigen-presenting cells, not simply by exposure to the antigen in solution. What biological rationale may underlie this requirement - consider both from the perspective of how this can aid in the generation of a cytotoxic T cell response, and how it might aid in avoiding undesirable T cell responses.
Q2. What is the biochemical pathway that corresponds to duplicate dominant epistasis in genetics? There is a 15:1 ratio of phenotypes, there are two genes involved: A and B. but what is biochemical pathway that causes this ratio to form?
What strategies do other organisms have that allow them to live in environments that are hypertonic to their cytoplasm. What is the pattern in data from Seeley's field experiment.
What blood test would be performed before starting the transfusion. Calcium levels in blodd are dropping to dangerously low levels. The hormone PTH is released and almost immediately calcium levels begin to rise. Shortly after, PTH release slows. Is ..
What is one way you might get bacteria of part b growing again without changing the medium. What result could be predicted if you were to transfer the bacteria of part a to the medium containing only unsaturated fatty acids without making any other ..
If wind blows at 35 m/s^2 over the house, what is net force on the roof if its area is 240 square meters and the roof is flat? Show all work, with equation and substitution units.
Vitamin B1 has to be taken in through the diet of the individual. At what phase will cellular respiration halt without B1.
At the present we know that over 99 percent of the time, glucose occurs in the closed-ring form. What likely difference between these forms would give chemists a clue that the open-chain form was not present.
Eastern tent caterpillars live in sizable groups in silk nests, or tents, which they construct in cherry trees. They are among the first insects to become active in the spring, emerging very early in the season-a time while daily temperature fluctuat..
Unattached earlobes are a dominant trait. If A denotes the allele for unattached earlobes, and denotes the allele for attached earlobes, what is (are) possible genotype(s) of a person who has unattached earlobes.
Both RT and PR represent potential targets for antiretroviral drugs. Drugs called nucleoside analogs (NA) act against RT, whereas drugs known as protease inhibitors (PI) act against PR.
While you measure the genotype frequencies of the population you get the following data. What will the frequency of Aa be in the next generation.
About how long at the earliest is it likely to take before he gets feeling back in that part of thumb. Give two reasons that the wolf population is not at Hardy-Weinberg equilibrium.
Utilize your imagination to describe two ways in which disturbance of the sort just described may affect the animals that live on the panels and amount of free space available.
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