Is the Lac Operon Transcribed When Lactose Is Present

Multiple Choice

Is the lac operon transcribed when lactose is present?

A) ​Yes, lactose binds to the repressor, allowing RNA polymerase to bind to the promoter and transcribe the operon.
B) ​Yes, lactose binds to RNA polymerase, allowing it to bind to the promoter and transcribe the operon.
C) ​No, lactose binds to the repressor, allowing it to bind to the two operators preventing transcription.
D) ​No, lactose has no effect on transcription of the lac operon.
E) ​No, lactose binds to the second operator, blocking transcription by RNA polymerase.