________ organisms are valuable in the production of vaccines
a. Infectious
b. Pathogenic
c. Virulent
d. Attenuated
Answer: D
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Two evolutionary hypotheses on the function of fever have been suggested: A fever may reflect manipulation of the host by the pathogen, to the pathogen's benefit, or a fever may be an adaptive response by the host to help to control the pathogen
itself. Studies on whether the use of fever-reducing drugs were helpful or interfered with the body's ability to fight the pathogen ________. A) supported the hypothesis that fevers are a manipulation of the host by the pathogen B) supported the hypothesis that fevers are an adaptive response to the pathogen C) supported both of these hypotheses, but in different contexts D) were inconclusive
During which part of mitosis does the nuclear envelope break down?
A) anaphase B) metaphase C) prophase D) telophase
Which of the following is a correctly stated condition that must be true for a population to be in Hardy-Weinberg equilibrium?
a. There must not be random mating. b. There must be a benefit of one genotype over another. c. The population must be large. d. There must be mutations within the population.
Fish have scales that enable them to live in a water environment. This is an example of
A. metabolism. B. homeostasis. C. cellular organization. D. development. E. adaptation.