If E.coli bacterium are grown in the presence of lactose A) the repressor will bind the operator, thus allowing transcription of the lac operon genes. B) the repressor will not bind the operator, thus preventing transcription of the lac operon genes. C) the repressor will not bind the operator, thus allowing transcription of the lac operon genes. D) the repressor will bind the operator, thus preventing transcription of the lac operon genes. E) No answer is correct.

Question

Quizplus · Accepted Answer

By binding to regulatory machinery, lactose stimulates expression of the lac operon.

If EColi Bacterium Are Grown in the Presence of Lactose