In Positive Control of Several Sugar Metabolism-Related Operons, the CAMP

question 56

Multiple Choice

In positive control of several sugar metabolism-related operons, the cAMP receptor protein (CRP) binds to DNA to stimulate transcription. Which of the following environmental conditions causes an increase in CRP activity in stimulating transcription?

• A) an increase in glucose and an increase in cAMP
• B) a decrease in glucose and an increase in cAMP
• C) an increase in glucose and a decrease in cAMP
• D) a decrease in glucose and a decrease in the repressor

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