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1. |
Which of the following events would occur at the E. coli lac operon when the glucose concentration of the growth medium is low and the lactose concentration is high? |
A. | The lac repressor protein will bind to the operator sequence. |
B. | Ribosomes will stall during translation of the first 13 amino acids. |
C. | The transcribed RNA will form a cAMP-dependent stem-loop structure to terminate transcription. |
D. | The catabolite gene activator protein (CAP), bound with cAMP, will stimulate binding of RNA polymerase to the promoter. |
Answer» E. | |