The removal of electrons from a compound is known as:
a. dehydration
b. oxidation
c. reduction
d. phosphorylation
e. a nonreversible chemical reaction
b
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The diffusion of water across a selectively permeable (biological) membrane is
A. a rare occurrence. B. active transport. C. a process that always requires proteins. D. always beneficial to a cell. E. osmosis.
A food web is a more realistic depiction than a food chain because:a
organisms rarely eat just one kind of food. b. energy flow is linear. c. energy flow is cyclic. d. a more complex model is always better than a simple one. e. matter cycles in ecosystems.
What is the definition of "swidden"?
A) tundra B) slash-and-burn agriculture C) the boreal forest D) biome
Speculate on the benefits that antibiotic-producing bacteria may gain from engaging in a mutualistic relation-ship with leaf cutter ants
a. They are selected for producing antibiotics. b. The bacteria are actively transmitted by the ants. c. The ants control the amount of food that the bacteria can obtain. d. There don't have to be benefits for the bacteria for the ant-bacteria relationship to persist.