The movement of water across a membrane from an area of lower solute concentration to a region of higher solute
concentration is called ____.
a. osmosis only
b. active transport only
c. endocytosis only
d. both diffusion and osmosis
e. both osmosis and active transport
ANSWER: d
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Marine mammals, because of the energy demands of being homeothermic, expend about ____ times as much energy as other marine organisms
a. 5 b. 10 c. 15 d. 20 e. 25
Cnidarians evolved from an ancestral group of
a. sponges. b. protists. c. fungi. d. plants.
Double strand breaks are generally readily repaired.
a. true b. false
Annelids possess all of the following except
A. setae in each segment. B. muscles to swim, crawl, and burrow. C. adductor muscles. D. ganglia to respond to light and respond to other environmental cues. E. circulatory, excretory, and neural elements in each segment.