In anaerobic respiration, all of the following can serve as the final electron acceptor, except:
A. nitrate.
B. oxygen.
C. sulfate.
D. nitrite.
E. None of the choices are correct.
Answer: B. oxygen.
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A) 1,000 B) 10,000 C) 100,000 D) 1,000,000
The two photosystems of light-dependent reactions are designated ____
a. type 1 and type 2 b. type I and type II c. photosystem A and photosystem B d. photosystem 680 and photosystem 700 e. photosystem I and photosystem II
In order to meet the conditions of the Hardy-Weinberg predictions, a population must:a
be very large. b. mutate very quickly. c. have extensive mating rituals. d. have a large number of immigrants. e. have a high rate of natural selection.
____ are short sections of underground stem encased by overlapping layers of thickened, modified leaves called scales.
A. Stolons B. Rhizomes C. Bulbs D. Corms E. Tubers