How do eukaryotic cells build and maintain genetic diversity?
A. through horizontal gene transfer
B. through asexual reproduction
C. by allowing more mutations
D. through sexual reproduction
D
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Which of the following is true about antigenic drift?
A. It causes major changes in the flu virus. B. It causes minor changes in the flu virus. C. It doesn't cause any changes in the flu virus. D. None of the answers are correct. E. It results in the genome reasserting.
Coral reefs have formed as the result of
A) rising ocean levels. B) seafloor settling. C) skeletons from some types of Cnidarians and algae. D) volcanic activity in warm tropical waters. E) cool water settling over warmer water.
Which of the following statements about hydrocarbons is false?
A) Hydrocarbons are inorganic compounds. B) Hydrocarbons contain only carbon and hydrogen atoms. C) Hydrocarbons consist of atoms linked by single or double bonds. D) Hydrocarbons can form straight, branched, or ringed structures.
The ability of a microbial cell to produce beta-lactamases is based on _______.
A. other organisms B. its environment C. the temperature D. its genetics