A) Glucose
B) Galactose
C) Lactose
D) Lactose and galactose
Correct Answer: C
Solution :
Lac operon becomes active only after inducing lactose as it is a substrate for the enzyme beta-galactosidase and it also regulates the switching on and off of the operon which cannot be done by glucose and galactose.You need to login to perform this action.
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