What is the value of having transgenic mice with the human gene for Huntington's disease (HD)?
A. The mice can be sacrificed and their brains examined to learn about the early stages of the
disease.
B. The mice can be used to screen possible anti-HD drugs.
C. The mice are much more numerous and available for study than human patients.
D. The mice can be used to screen possible anti-HD drugs and are much more numerous and
available for study than human patients.
E. All of these.
E
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Which of the following is TRUE of the citric acid cycle?
A. It yields most of the NAD+ in cell respiration. B. It produces oxygen. C. It yields ATP, NADH, and FADH2 as energy intermediates. D. It occurs on the inner membrane of the mitochondria. E. It produces ATP as the primary energy intermediate.
Which of the following terms refers to all
species that live and interact in a specific area?
a. biosphere b. community c. ecosystem d. population e. niche
Ecological character displacement will tend to reduce
A. prey vulnerability to predators. B. the intrinsic rate of population growth of a species. C. disease virulence. D. niche overlap between competing species. E. the rate of escape-and-radiate coevolution