To activate the transcription of permease and the whole lac operonlactose needs to be present in the cell.How can lactose get in the cell when the permease gene is not activated?
A)The repressed lac operon is never completely repressed.
B)There is a second permease in the genome that initially transports lactose.
C)Lactose freely moves across the plasma membrane.
D)Though the lac operon has been studied for many years,this mystery is unsolved.

Question

Quizplus · Accepted Answer

The repressed lac operon is never completely repressed, allowing a small amount of permease to be produced, which can transport lactose into the cell.

To Activate the Transcription of Permease and the Whole Lac