The cAMP receptor protein (CRP) is said to be responsible for positive regulation of the lac operon because ________.
A) CRP levels rise when lactose is present in the environment
B) CRP promotes the production of allolactose
C) CRP prevents binding of the repressor to the operator
D) CRP bound to the CRP-binding site stimulates the transcription of the lac operon
Correct Answer:
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Q2: Under what conditions does the trp repressor
Q3: A rise in extracellular glucose results in
Q4: How does breakdown of glucose inhibit transcription
Q5: If a researcher moves the repressor gene
Q6: Which of the following conditions is most
Q8: When taken up by a cell, which
Q9: According to the lac operon model proposed
Q10: Which of the following molecules is a
Q11: If a mutation deactivated a regulatory gene
Q12: Which of the following predictions about the
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