Microorganisms and Disease
In the human disease cholera, what is it that actually ends up killing the victim?

Dehydration and loss of nutrients
Faulty carrier proteins
Too little water in the food stream
the toxin produced by the bacterium

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Microorganisms and Disease
The influenza vaccine is administered each year because

mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time
None of these
it is a polysaccharide vaccine that does not confer long-term protection

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Microorganisms and Disease
Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis?

Both organisms cause skin and respiratory tract infections
Both organisms are gram-positive spore formers
The most serious disease symptoms are the direct result of toxin action
Diphtheria toxin and edema toxin are ADP ribosylating toxins

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