Question

question 14
full induction of the lactose operon requires ______.
a lactose present
b lactose and glucose present
c lactose and arabinose present
d lactose present without glucose

Explanation:

The lac operon is induced when lactose is present (to inactivate the repressor) and glucose is absent (to activate the CAP-cAMP complex, enhancing transcription). Full induction requires both conditions.

Answer:

D. lactose present without glucose