Why does the lac operon shut down some time after the addition of lactose in the medium where E.coil was growing ? Why low level expression of lac operon is always required ?

Why does the lac operon shut down some time after the addition of lactose in the medium where E.coli was growing ? Why low level expression of lac operon is always required ?

Why does the lac operon shut down some time after the addition of lactose in the medium where E.coli was growing ? Why low level expression of lac operon is always required ?

Why does a body stop after rolling down for some time ?

Assertion :- Lactose is the substrate for the enzyme beta -galactosidase & it regulates switching on & off of the operon. Reason: A very low level of expression of lac operon is always present in cell all the time.

Assertion :- Lactose is the substrate for the enzyme beta -galactosidse & it regulates switching on & off of the operon. Reson: A very low level of expression of lac operon is always present in cell all the time.

What would happen if the inducer of the lac operon is absent in the medium where E.coli is being cultured?

Why is lactose called the inducer of lac operon?

Which of following statement is true for lac operon in E-coli (a) lac operon consists of one regulatory gene and five structural gene. (b) The i gene codes for inducer (c) The z-gene codes for beta -galacosidase (d) A very low level of expression of lac operon has to be present in cell all the time

How would lac operon operate in E. coli growing in a culture medium where lactose is present as source of sugar ?