Q. In E. coli, during lactose metabolism repressor binds to
A) regulator gene
B) operator gene
C) structural gene
D) promoter gene.
Explanation
In the lac operon of E.coli, due to the activity of regulator gene synthesis of repressor molecules occurs. These repressor molecules get attached to the operator gene and thus check mRNA synthesis and because of this no protein synthesis occurs. [image:6_image73.png]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.