The Promoters of Positively Controlled Operons Require Activator Proteins Because

question 38

Multiple Choice

The promoters of positively controlled operons require activator proteins because

• A) RNA polymerase easily recognizes the consensus sequence.
• B) they are required to inactivate the repressor proteins.
• C) the promoters bind RNA polymerase weakly and utilize activator proteins to help RNA polymerase recognize the promoter.
• D) they are needed to bind to the allosteric site of RNA polymerase.

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Definitions:

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Substances produced by living organisms found in nature that are not man-made or synthesized.

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Manufactured substances made from chemical synthesis, rather than those made from natural resources.

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A biological phenomenon where a low dose of a harmful substance has a beneficial effect, while a high dose is toxic.

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A network of glands that produce and release hormones to regulate various bodily functions.