NEET Solved Paper 2016 Question 17
Question: Which of the following is required as inducer(s) for the expression of Lac operon?
Options:
A) Glucose
B) Galactose
C) Lactose
D) Lactose and galactose
Show Answer
Answer:
Correct Answer: C
Solution:
- Lactose acts as the inducer for the expression of the Lac operon. When lactose is present, it binds to the repressor protein, causing a conformational change that releases the repressor from the operator region of the operon. This allows RNA polymerase to transcribe the genes necessary for the metabolism of lactose.