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Q. Most biologists believe that immune system's defense against infections largely rests on its ability to distinguish self molecules from nonself molecules. This concept seems central to our understanding of immune function. However, like all scientific ideas, it is not beyond question. Some immunologists have developed an alternative hypothesis: that the immune system's effectiveness rests mostly on its ability to recognize damage to the body tissues caused by the invaders, not on the ability to recognize nonself. If you were going to test the "damage" hypothesis what might you look for? Which sort of cell would you expect to be directly affected by damaged tissues? Why? Some proponents argue that the "damage" hypothesis makes more sense from an evolutionary perspective, claiming that it is more advantageous for an organism's defense system to respond to tissue damage than to the mere presence of a foreign microbe. Do you be in agreement? Why or why not?
Assume that, during biological research, it became possible to incorporate fully functional chloroplasts into the basal layer of our epidermal skin cells. Knowing the structure and function of chloroplasts, how will this influence our body.
If the centrioles are mispositioned in the cell, the functional mitotic spindle would fail to form. In this state, how will chromosome segregation be affected . Microtubules will not attach to kinetochores.
Why is the immune system so highly conserved, as other physiological systems are more specially adapted to our mammalian ancestry or hominid roots.
What is an advantage of using GFP fusions to visualize specific proteins, instead of staining cells with fluorescently labelled probes that bind to the target protein.
The trend in the U.S. is having children later in life than previous generations. What effects may this trend have on the incidence of late-acting dominant lethal alleles in the population.
The F- strain is unable to synthesize these amino acids; therefore, they must be supplied in the growth medium. Utilize the results from replica-plating to reply the questions.
Biochemical feedback regulation or end product inhibition. What are the most general neurotransmitters in the brain.
Which distributed database process is best under these circumstances. How is the replication of the viral genome of retroviruses unique among the viruses? Why was it before believed that only DNA viruses could cause cancer.
You cross an M1M2 father with an M2M3 mother and ?nd out that the mean number of nosehairs in dissimilar marker genotypes in their offspring are as follows.
Illustrate what is meant by motivation. What types of non-financial reward might a company employ to motivate employees.
Complete a chart by identifying six actions that reduce the risk of infection and strengthen the body's immune system. In the second column, explain how the action reduces risk of infection and strengthens the body's immune system.
History of stem cell legislation and how does it compare to comparable statutes in the rest of the world? Talk about what the current legislative state of affairs is and where the law on stem cells in the United States should go in the future and why..
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