The terms "run" and "tumble" are generally associated with

A) eukaryotic cells.
B) nutrient transport.
C) chemotaxis.
D) clustering of certain rod-shaped bacteria.


Answer: C

Biology & Microbiology

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The first cells were

a. autotrophic. b. parasitic. c. anaerobic. d. aerobic. e. all of these.

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Plants can most readily utilize the ________ form of nitrogen

A) nitrous oxide B) N2 C) amino D) nitrate

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Like many insects, some amphibians undergo ________ in their life cycle as they have distinct larval and adult stages

A) aquatic development followed by terrestrial existence B) development in a nest followed by flight C) metamorphosis D) alternation of generations

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