Which of the following conditions is most likely to result in transcription of the lac operon?
A) There is more glucose in the cell than lactose.
B) There is glucose but no lactose in the cell.
C) The cAMP and lactose levels are both high within the cell.
D) The cAMP level is high and the lactose level is low.

Question

Quizplus · Accepted Answer

The lac operon is transcribed when lactose is present to act as an inducer, removing the repressor from the operon, and when glucose levels are low, leading to high cAMP levels which facilitate the binding of CAP (catabolite activator protein) to the DNA, enhancing transcription.

Which of the Following Conditions Is Most Likely to Result