Molecular Basis of Inheritance Question 148
148. The wild type $E$. coli cells are growing in normal medium with glucose. They are transferred to a medium containing only lactose as sugar. Which of the following changes takes place?
[1995]
(a) The lac operon is repressed
(b) All operons are induced
(c) The lac operon is induced
(d) E.coli cells stop dividing
Show Answer
Answer : c
Hints & Solution
(c) If Escherichia coli bacteria grow in normal glucose medium and when transferred to a medium containing lactose, then the lac operon is induced.
