Consider the following food chain: hawk - rabbit - clover. Each species will contain a different amount of calories in its body (clover: 10 calories, rabbit: 500, and hawk: 1200). Each species has a different daily caloric requirement (clover: sunlight, rabbit: 100 calories, hawk: 300). How many clover plants, per day, does it take to support one rabbit?
A. approximately 10 plants
B. approximately 100 plants
C. approximately 3 plants
D. approximately 50 plants
E. approximately 1000 plants
Answer: B
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When an atom or molecule gains one or more electrons, it is said to be:
A. energized. B. oxidized. C. polarized. D. reduced.
Which of the following is not involved in the specific targeting of proteins to lysosomes?
a. N-linked glycosylation in the ER b. Mannose phosphorylation c. The mannose-6-phosphate receptor d. Signal patches
Which of the following best distinguishes rough ER and smooth ER?
Clayton et al. discovered the following relationship between feather-louse size and the body mass of their corresponding bird hosts. What do the authors hypothesize from this relationship about the mechanism of cospeciation of doves and lice?
a. Lice are unlikely to switch to hosts that differ in body size from their original host. b. Lice will tend to shift to the larger host regardless of their own size. c. Larger lice are always better at holding onto their hosts. d. Smaller lice are always better at evading the preening attempts than large lice species.