Which of the following is required as an indu | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The $lac$ operon is an inducible operon that regulates the metabolism of lactose in $E. coli$.In the absence of lactose,the repressor protein bind

Vedclass · Accepted Answer

Lactose

Vedclass · Answer

(B) The $lac$ operon is an inducible operon that regulates the metabolism of lactose in $E. coli$.In the absence of lactose,the repressor protein binds to the operator region,preventing $RNA$ polymerase from transcribing the structural genes.When lactose is present in the medium,it enters the cell and is converted into its isomer,allolactose,by a small amount of $\beta$-galactosidase enzyme.Allolactose acts as an inducer by binding to the repressor protein,which causes a conformational change in the repressor,rendering it unable to bind to the operator.This allows $RNA$ polymerase to transcribe the structural genes $(lacZ, lacY, lacA)$,thus expressing the operon.Therefore,lactose is the inducer for the $lac$ operon.

Which of the following is required as an inducer for the expression of the $lac$ operon?

Similar Questions

At which level is gene expression regulated in the $lac$ operon of $E. coli$?

In the $lac$ operon,the structural genes are switched off when:

Who provided the clear explanation of the $Lac$ operon?

When do bacteria $NOT$ produce $\beta$-galactosidase?

In the $Lac$ operon,to which component does the inducer bind to switch the system 'on'?

Vedclass Test Series

Exam Paper Generator

Online Exam Module