Wild type $E. coli$ cells are growing in a normal medium with glucose. They are transferred to a medium containing only lactose as the sugar. Which one of the following changes takes place?

  • A
    The $lac$-Operon is repressed
  • B
    All Operons are induced
  • C
    $E. coli$ cells stop dividing
  • D
    The $lac$-Operon is induced

Explore More

Similar Questions

How is the $lac$ operon regulated by the repressor?

In an $E. coli$ strain,the $i$ gene gets mutated such that its product cannot bind the inducer molecule. If the growth medium is provided with lactose,what will be the outcome?

An inactive repressor produced by a regulator gene that does not block the operator site in the tryptophan operon is called:

In a negative operon,

In the Operon concept,the regulator gene functions as:

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo