Lactose (Lac) operon is regulated by :

A polycistronic structural gene of lac operon is regulated by

Lactose in lac operon acts as :

In lac-operon , which protein is not regulated by the repressor?

In lac-operon , which protein is not regulated by the repressor?

(a) What is an operon ? (b) Explain how a polycistronic structural gene is regulated by a common promoter and a combination of regulatory genes in a lac- operon.

Role of lactose in lac operon is

The operator gene of lac operon is ' turned on ' when lactose molecules bind to

(a) State the arrangement of different genes that in bacteria is referred to as operon. (b) Describe the role of lactose in lac operon. (c) Draw a schematic labelled illustration of lac operon in a switched on state.

(a) State the arrangement of different genes that in bacteria is referred to as operon. (b) Describe the role of lactose in lac operon. (c) Draw a schematic labelled illustration of lac operon in a switched on state.