How does water enter and exit a cell?

a. By use of an integral transport protein
b. By simple diffusion or by use of an integral transport protein
c. By simple diffusion across the membrane
d. By use of a peripheral transport protein


Answer: b. By simple diffusion or by use of an integral transport protein

Biology & Microbiology

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The male gametophyte is indicated by

a. A. b. B. c. C. d. D. e. E.

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The importance of computers and of computer software to modern cladistics is most closely linked to advances in _____

A) light microscopy B) radiometric dating C) fossil discovery techniques D) molecular genetics

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An endemic disease

a. is constantly present in the populace. b. has a low incidence in the population. c. is persistent in the population because of the presence of reservoirs. d. is described by all of the above.

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