Which of the conditions would result in the least amount of transcription of the lac operon?
A) I
B) II
C) III
D) IV

Question

Which of the conditions would result in the least amount of transcription of the lac operon? 
A) I 
B) II 
C) III 
D) IV

Quizplus · Accepted Answer

Condition III corresponds to high glucose levels and inhibits the production of cAMP, which is required for the binding of CAP to the lac promoter region. CAP binding enhances RNA polymerase binding and increases transcription, so reduced levels of CAP would result in lower transcription of the lac operon.

Which of the Conditions Would Result in the Least Amount