A polymer with the sequence 5' ACGTACGAATAG 3' is a:
A. protein.
B. piece of DNA.
C. piece of RNA.
D. polysaccharide.
Answer: B
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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.
Imagine that a cell can be treated with a drug that prevents proteins from undergoing large conformational changes. Which transport proteins would be unaffected by this drug treatment?
A. Na+/K+ ATPase B. H+/sucrose symporter C. Fructose uniporter D. Aquaporin E. All transport proteins would be affected
Which aspect of population genetics refers to chance fluctuations of allele frequencies resulting from sampling error and is more prominent in small, isolated populations?
A) founder effect B) mutation C) gene flow D) gene drift E) bottleneck effect
Habitat fragmentation can reduce biodiversity by ____.
A. withdrawing an essential resource from native species B. sterilizing for pollution control C. eliminating vast tracts of forests D. introducing more native species into a habitat E. decreasing human use of natural resources