Botany-DNA Replication
NEET Botany DNA Replication MCQ Question
Type: MCQ-fact-Easy-Class 12
What is the role of lactose in the regulation of the lac operon?
A
It acts as an inducer for the operon.
B
It functions as a repressor of the operon.
C
It is a substrate for beta-galactosidase.
D
It prevents RNA polymerase from binding.
Correct Answer
Option A
Detailed Explanation
Lactose is termed as the inducer because it regulates the switching on and off of the operon by allowing lactose to enter the cells and induce the operon.
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