Multiple choice

What happens in lac operon when both glucose and lactose are present in the cell?

  1. CAP binds to the activator binding site.

  2. RNA polymerase binds to the promoter.

  3. There is little or insufficient cyclic AMP.

  4. Lactose binds to the repressor and transcription takes place.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There is insufficient cyclic AMP when equal amounts of both glucose and lactose are present in the cell.

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