The regulation of the lactose operon depends on the level of which of the following substances in the medium?
A) DNA polymerase
B) RNA polymerase
C) Lactose
D) Glucose
E) C & D
Answer (2)
The lactose operon's regulation depends on the presence of lactose and the absence of glucose. Lactose binds to the repressor, allowing gene expression, while glucose represses it when present. Therefore, both substances are crucial in this regulation mechanism. ;
The regulation of the lactose operon in bacteria depends on both the presence of lactose and the absence of glucose. Lactose activates the operon by binding to the repressor, allowing transcription, while glucose inhibits it. Thus, the correct answer is E) C & D.
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