Remember, glucose or galactose cannot act as inducers for lac operon. Can you think, of how long the lac operon would be expressed in the presence of lactose?

Select the molecule/s which cannot act as inducer in Lac operon.

Name the genes that constitute an operon. How does lac operon get switched on in the presence of lactose?

Which one of the following is a real inducer of lac operon.

Explain the role of Lactose as inducer in Lac-operon.

In the function of the lac operon in E-coli, the lac genes z, y, a are transcribed in the presence of lactose because

Describe how the lac operon operates, both in presence and absence of inducer.

In the medium where E. coli was growing, lactose was added, which induced the lac operon. Then, why does lac operon shut down some time after addition of lactose in the medium?

In lac operon, lactose acts are

The inducer for switching 'on' the lac operon in bacteria is :