Molecular Basis Of Inheritance Question 128
Question: Wild type E.coli cells are growing in normal medium with glucose. They are transferred to a medium containing only lactose as the sugar. Which one of the following changes take place [CBSE PMT 1995]
Options:
A) The lac-Operon is repressed
B) All Operons are induced
C) E. coli cells stop dividing
D) The lac-Operon is induced
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Answer:
Correct Answer: D
Solution:
Lac operon: cluster of genes that regulates production of enzymes needed to metabolize lactose in bacterial cells (E.
coli).
It is an inducible operon.
BETA
