Which of the Following Must Occur in Order for a Repressible

question 18

Multiple Choice

Which of the following must occur in order for a repressible operon to be transcribed?

• A)A corepressor must be present.
• B)RNA polymerase and the active repressor must be present.
• C)RNA polymerase must bind to the promoter,and the repressor must be inactive.
• D)RNA polymerase cannot be present,and the repressor must be inactive.