Edward Jenner’s work became the basis for worldwide ____ against ____
a. vaccination; polio
b. vaccination; smallpox
c. antibiotic treatment; polio
d. antibiotic treatment; smallpox
e. vaccination; chickenpox
ANSWER: b
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Which of the following processes is primarily responsible for the fact that mammals are not capable of parthenogenesis?
A. dosage compensation B. gene silencing C. imprinting D. Barr body formation
In Drosophila, a mutation in a gene for a bicoid transporter gene could result in which of the following?
A. offspring with no head B. offspring with no spiracles C. offspring with two heads and no spiracles D. offspring with the location of the head and spiracles reversed E. offspring with no head and two spiracles
The filtration step in the formation of urine for animals sorts materials only by
A. overall size with cells and proteins usually being kept out of the filtrate. B. whether they are charged or not. C. whether the substance in question is a waste product or not. D. whether they contain nitrogen or not. E. the hydration state of the body.
Which of the following is NOT a physiological effect of endotoxin exposure?
a. tissue necrosis b. hemorrhagic shock c. rapid increase in the numbers of lymphocytes d. fever