A transcription factor that enhances gene expression is called a(n):
A. repressor.
B. enhancer.
C. operator.
D. activator.
D
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Fatty acids, waxes and oils are classified in what category of biomolecules?
a. Carbohydrates b. Lipids c. Proteins d. Nucleic acids e. None of these choices.
Which of the following is a characteristic of K-selected species?
a. Adapting to stable environments b. Having a high number of offspring c. Offering minimal parental care d. Providing no resources to their offspring
Which statement describes a virulent phage?
a. A virulent phage infects viruses. b. A virulent phage infects prions. c. A virulent phage infects virions. d. A virulent phage destroys bacteria. e. A virulent phage infects but does not destroy bacteria.
At a party, one of your friends has just revealed that he and his wife are trying to conceive. What do you advise him to avoid at the party?
A. The hot tub B. The loud music C. The raw vegetable appetizers D. The melted cheese fondue