Which of the following ultimately provides the O2 used during the process of oxidative phosphorylation
-fermentation
-light reactions of photosynthesis
-Calvin cycle of photosynthesis
-Krebs cycle
-carbon fixation
-light reactions of photosynthesis
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Many male songbirds are brightly colored. However, the color of the birds is determined by a balance of
A. natural selection against bright colors by predation and sexual selection in favor of bright colors. B. gene flow that reduces bright colors and natural selection in favor of bright colors. C. mutations that reduce bright colors and sexual selection in favor of bright colors. D. mutations that reduce bright colors and gene flow in favor of bright colors. E. natural selection against bright colors by predation and mutations that introduce bright colors.
Innovations and new technology systems create new opportunities for initial advantage and cumulative causation in peripheral regions
Indicate whether this statement is true or false.
Cholesterol can be remodeled into
a. bile salts. b. sex hormones. c. steroids. d. vitamin D. e. all of these.
Darwin studied and wrote extensively about the mechanism known as artificial selection. Artificial selection is similar to natural selection, except that ________
A) natural selection works toward a specific goal B) artificial selection relies on preexisting variations in populations; natural selection does not C) artificial selection produces varieties that would be less likely be favored in nature D) artificial selection produces varieties of less interest to humans than natural selection