As electrons are passed down the electron transport chain, the energy released is used immediately to ________.
Fill in the blank(s) with the appropriate word(s).
Ans: concentrate H+ in the intermembrane space
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Self-incompatibility in flowering plants is a biochemical recognition and rejection process that prevents ____
a. both self-fertilization and self-pollination b. self-pollination and occasionally prevents self-fertilization c. self-fertilization but not self-pollination d. self-pollination but not self-fertilization e. self-fertilization and occasionally prevents self-pollination
Tetanus differs from botulism in that
A. muscles cannot relax in tetanus, while muscles cannot contract in botulism. B. tetanus results in flaccid paralysis, while botulism paralysis is rigid. C. there is a vaccine for botulism but not for tetanus. D. tetanus results from an exotoxin, botulism from an endotoxin. E. All of the choices are correct.
Which lineage includes American alligators?
a. Sphenodontia b. Squamata c. Amphibia d. Archosauria
Thinking of the examples in your book of adaptive radiation, in which of the following environments might you be most likely to find adaptive radiation?
A) in earthworms feeding on detritus B) among insects that are generalist feeders C) in fruit flies that feed on different yeast strains specific to different species of cacti in the desert D) among houseflies living in a garbage dump