A fever augments the host's defenses by
A. enhancing microbiostasis.
B. enhancing the activity of the immune system.
C. stimulating leukocytes into action.
D. All of the choices are correct.
Answer: D
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Genetic risk factors:
A. can increase the likelihood of somatic mutations. B. can increase the likelihood of germ-line mutations. C. can be influenced by the environment. D. can be heritable. E. All of the answer options are correct.
The green sulfur bacteria are ________.
A. facultative anaerobes B. microaerophilic C. obligate anaerobes D. either obligate anaerobes or facultative anaerobes
What is wave shock? a. The immediate generation of a wave along the shore
b. Force of a wave against organisms and coastline. c. Cold temperature shock of a wave. d. The magnitude of the wave.
If the Hardy-Weinberg equilibrium is met, what is the net effect?
A. evolution leading to a population better adapted to a changing environment B. very slow and continuous evolution with no increased adaptation C. no evolution because the alleles in the population remain the same D. evolution leading to a population better adapted to an unchanging environment