The greatest expression of the lac operon occurs when lactose levels are _____

A) low and glucose levels are low
B) low and glucose levels are high
C) high and glucose levels are low
D) high and glucose levels are high


Answer: C

Biology & Microbiology

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a. testosterone b. melatonin c. gonadotropin-releasing hormone (GnRH) d. estrogen

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If the rate stops increasing, what light intensity does it stop increasing at?

a. 0-800 ft-candles b. 800-1600 ft-candles c. 1600-2400 ft-candles

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By definition, a nerve is

a. a bundle of sensory, motor, or both types of nerve fibers outside the central nervous system. b. a single extension of a neuron. c. the same as a neuron but within the central nervous system. d. a collection of nerve cell bodies outside the central nervous system. e. a fiber more than ten inches in length.

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During alcohol fermentation, yeasts ferment

A) oxygen gas. B) sugar. C) chitin. D) carbon dioxide. E) complex carbohydrates.

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