Midterm 1 Study Guide Questions

How is the field of synthetic biology contributing to

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Unformatted text preview: more than 1, the infection will lead to an epidemic. What is herd immunity? Herd immunity is a percentage of the population that remains immune; if a certain percentage remains immune, then there is the potential to prevent an epidemic. What is an example of a zoonotic disease? An example of a zoonotic disease is rabies, which can be spread via an animal bite. Toxoplasmosis is one of the most common infectious diseases worldwide. Name two mechanisms by which humans can contract the disease. One mechanism by which humans can contract toxoplasmosis is by carelessly handling cat litter. Another mechanism would be by consuming raw or undercooked meat (lamb, pork and beef). Why is a rodent infected with Toxoplasma gondii more likely to be eaten by a cat? Because the Toxoplasma gondii causes rodents to experience elevated levels of the neurotransmitter dopamine. This causes them to become more active and less fearful of cats and their smells, which maximizes T. gondii’s return to cats. What is a vector- borne disease? A vector- borne disease is spread though a vector, from one host to another. When a person has malaria, in what parts of the body can the pathogen be found? The pathogen can be found in the blood and liver cells. What is one environmental cue that Plasmodium uses to know that it has left the body of a human and has entered that of a mosquito? Heat/temperature changes. What part of the Plasmodium life cycle do the typical chills and fever symptoms of someone with m...
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This document was uploaded on 03/21/2014.

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