Lactose is the substrate for the enzyme beta galactosidase and it regulates switching on and off of the operon. Hence it is termed as

Question

Lactose is the substrate for the enzyme beta galactosidase and it regulates switching on and off of the operon. Hence it is termed as (A) Inducer (B) Repressor (C) Aporepressor (D) Co-repressor

Tardigrade Admin · Accepted Answer

In lac operon, the regulator gene produces active repressor protein which binds to the operator switching it off. When bacteria are grown in a medium having lactose, it functions as an inducer and binds repressor making it inactive and switching on the system.

Q. Lactose is the substrate for the enzyme beta galactosidase and it regulates switching on and off of the operon. Hence it is termed as

Inducer

Repressor

Aporepressor

Co-repressor

In lac operon, the regulator gene produces active repressor protein which binds to the operator switching it off. When bacteria are grown in a medium having lactose, it functions as an inducer and binds repressor making it inactive and switching on the system.