Which Statement About Catabolite Repression Is False

question 26

Multiple Choice

Which statement about catabolite repression is false?

• A) Glucose is the preferred energy source for E. coli and represses the utilization of other sugars.
• B) The CAP protein is involved in catabolite repression of the lac operon.
• C) RNA polymerase is the effector molecule that enables CAP to bind to the promoter.
• D) The CAP protein and its effector molecule exert positive control over the transcription of the lac operon.
• E) High glucose concentrations decrease the intracellular concentration of the effector molecule of the CAP protein.

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