Reef-building polyps get their sugars from mutualistic ____

a. green algae
b. cyanobacteria
c. dinoflagellates
d. roundworms
e. planarians


ANSWER: c

Biology & Microbiology

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An ________ of a nerve cell is the temporary depolarization and repolarization of the cell membrane.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

What contributes to muscle fatigue?

a. lactic acid buildup b. glycogen depletion c. both lactic acid buildup and glycogen depletion d. loss of nerve innervation e. stretching a muscle

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Figure 53-6 represents the age structure diagram of:

a. the transition stage. b. the preindustrial state. c. a moderately developed country. d. a developing country. e. a highly developed country.

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The minimum sterilizing conditions in a steam autoclave are

A. 160°C for 2 hours. B. 100°C for 30 minutes. C. 63°C for 30 minutes. D. 71.6°C for 15 seconds. E. 121°C at 15 psi for 15 minutes.

Biology & Microbiology