All of the Following Statements Concerning the Lactose Operon Are

question 83

Multiple Choice

All of the following statements concerning the lactose operon are correct EXCEPT

• A) transcription is regulated by both positive and negative acting proteins.
• B) the mRNA transcribed from the operon corresponding to the Z, Y, and A genes is very unstable.
• C) cyclic AMP modulates transcription of the lac operon in response to external glucose levels.
• D) the repressor binds specifically to the CAP protein.
• E) the level of induction of the lactose operon is dependent on the concentration of inducer.

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