Competition typically
A) only involves two closely related species.
B) involves a predator and prey.
C) is a complex interaction of biotic and abiotic factors.
D) is random.
C
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According to the Hardy-Weinberg law, if the frequency of a recessive allele is 36 percent, the frequency of the dominant allele would be what percent?
a. 5 b. 8 c. 25 d. 48 e. 64
Unlike eukaryotic cells, bacterial cells _____
a. have no plasma membrane b. have RNA but not DNA c. have no nucleus d. have no plasma membrane and have no nucleus
When a chlorophyll molecule absorbs light, which excites an electron, the chlorophyll molecule:
A) releases kinetic energy. B) gains potential energy. C) releases a photon. D) returns to its resting state. E) reflects the photon.
A type of transport of a solute across a membrane, up its concentration gradient, using protein carriers driven by the expenditure of chemical energy is known as
A. osmosis. B. facilitated transport. C. diffusion. D. exocytosis. E. active transport.