A Repressible Operon Is Usually Controlled By

question 51

Multiple Choice

A repressible operon is usually controlled by:

• A) an inactive repressor that allows it to be in the "on" state
• B) the supply of the precursor product for the enzymes
• C) an inactive repressor that keeps it in the "off" state
• D) tryptophan
• E) being turned "on," usually by the end product of the pathway

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