In the lac operon, what happens when lactose is present and glucose is absent?
Answer and explanation
Correct answer: C. Transcription is highly active
- Step 1: Lactose inactivates the repressor and low glucose raises cAMP, so CAP stimulates transcription. Answer: Transcription is highly active. Why not the others: The repressor is released with lactose, and cAMP is high, not low, when glucose is absent.
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