The first tetrapods evolved ____.
A. on land
B. after the amphibians
C. from lobe-finned fish
D. after the first amniotes
E. from the ray-finned fishes
Answer: C
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How does the metabolism occurring in chloroplasts differ from that of mitochondria?
A. Different proton sources B. Different electron sources C. Different electron acceptors D. Different electron acceptors and sources E. None of these answer options is correct.
Which steps compose a plant’s triple response to ethylene?
A. Seedlings bend toward the sun, seedling stem thickens, and the seedling stem bends, forming a hook. B. Seedling stem stops elongating, seedling stem thickens, and the seedling stem bends, forming a hook. C. Seedling stem stops elongating, seedling stem thickens, and the seedling undergoes apoptosis. D. Seedling bends away from the sun, seedling stem thickens, and the seedling stem bends, forming a hook.
Inflammation begins when mast cells in tissue release __________, which increases blood flow and
also makes capillaries leaky to phagocytes and plasma proteins. Fill in the blank(s) with the appropriate word(s).
The equivalent in figure 2 of letter “D” in figure 1 is
indicated by a. E. b. F. c. G. d. H. e. all of these.