When the body utilizes fats for energy the fatty acids enter which pathway of the metabolic cycle?
specifically glycolysis in the liver
a. glycolysis
b. Krebs cycle
c. electron transport chain reactions
d. specifically glycolysis in the liver
e. fermentation reactions
ANSWER: b
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Which of the following statements explains why animals are less likely than plants to speciate by polyploidy?
A) Animals self-fertilize less often than plants, so diploid gametes are less likely to fuse. B) Animals have better mechanisms for repairing chromosomes than plants have. C) Animals are more mobile, so they have more effective prezygotic isolating mechanisms. D) Animals are more mobile, so populations get separated far less often. E) Animals use a more rigorous form of meiosis than plants, making diploid gametes much more difficult to form.
The phases of meiosis that most resemble those of mitosis are
A) the meiosis I phases. B) the meiosis II phases. C) meiosis I, except for the pairing of homologues. D) meiosis II, except for the pairing of homolouegs. E) both choices A and B
A naturalist is studying morphological patterns that are shared between species in two temperate rainforests that are located on different continents. This would be an example of which field of study?
a. biomorphology b. comparative ecology c. biological geology d. comparative geography e. biogeography
Of the following, which is the first explanation
of a problem? (It is sometimes called an "educated guess.") a. principle b. law c. theory d. fact e. hypothesis