Soils are composed mostly of which of the following?
A. layers of many decaying elements
B. fertilizers and other organic materials
C. horse and cow manure
D. layers of material mostly from rocks
E. inorganic minerals and organic materials
E. inorganic minerals and organic materials
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The general term used to describe the anabolic and catabolic reactions in a cell is
A. enzymatic. B. thematic. C. aerobic respiration. D. metabolism.
Depolarization of the neuron plasma membrane occurs due to
a. the diffusion of K+ into the cell. b. the diffusion of K+ out of the cell. c. the diffusion of Na+ into the cell. d. the diffusion of Na+ out of the cell. e. closed gated channels.
The electrons that are passed to NADP+ at the
end of the electron transfer chain were obtained from
a. water. b. CO2. c. glucose. d. sunlight. e. ATP.
A replicated DNA molecule contains one new strand and one old strand
a. True b. False