Which of the following is the best definition of generation time in a bacterium?

A. the length of time it takes to reach the log phase
B. the length of time it takes for a population of cells to double
C. the time it takes to reach stationary phase
D. the length of time of the exponential phase


Ans: B. the length of time it takes for a population of cells to double

Biology & Microbiology

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An animal that can fertilize its own eggs is

A. a synchronous hermaphrodite. B. a sequential hermaphrodite. C. producing asexually. D. a protrandous hermaphrodite. E. a protogynous hermaphrodite.

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There are how many different kinds of amino

acids in proteins? a. 3 b. 6 c. 12 d. 20 e. 28

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Which of these is mismatched?

a. oligodendrocytes; make myelin for brain axons b. Schwann cells; make myelin for peripheral axons c. astrocytes; most abundant cells in the brain d. microglia; engulf dead or dying brain tissue e. none of these are mismatched

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Some very showy desert flowers avoid desiccation of delicate floral tissues by blooming at night. They are pollinated by

A) bees. B) hummingbirds. C) wind. D) bats.

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