Which of the following conditions is most likely to cause the lactose operon to be transcribed?
A) There is more glucose in the cell than lactose.
B) There is glucose but no lactose in the cell.
C) The cyclic AMP 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 lactose operon is typically stimulated when there are high levels of lactose and low levels of glucose in the cell. However, the presence of cyclic AMP (cAMP) is also necessary to activate the transcription of the operon. When both lactose and cAMP levels are high, it is most likely that the lactose operon will be transcribed.

Which of the Following Conditions Is Most Likely to Cause