Which of the following is a reason for metabolic regulation?
A. Ensure efficient use of energy stores
B. Maintain cell components at appropriate levels
C. Conserve materials
D. All of the choices are correct.
Answer: D
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The most widely used herbicide in the world, 2,4-D, is a synthetic form of
a. abscisic acid. b. ethylene. c. salicylic acid. d. gibberellin. e. auxin.
If a mutated DNA sequence produces a protein that differs in one central amino acid from the normal protein, which of the following kinds of mutations could have occurred? View Available Hint(s) If a mutated DNA sequence produces a protein that differs in one central amino acid from the normal protein, which of the following kinds of mutations could have occurred?
a. A deletion mutation. b. An addition mutation c. None. d. An addition mutation and a deletion mutation.
Which of the following describe(s) conotoxins?
a. up to 300 different types b. delivered by a harpoon-like device c. very specific effects d. affect membrane proteins e. all of these
The process illustrated in the accompanying figure is:
a. imbibition.
b. germination in a monocot.
c. apomixis.
d. abscission.
e. germination in a eudicot.