35 1000 pointa produce their products O at a steady rate al

35. 1000 pointa produce their products O at a steady rate al the time O only when appropriate hormone O wrwin the transcription actwntor ia iniibled by an eatracwwlar innai

Solution

The answer is

As the products are needed or not.

I am herewith explaining this by taking the example of Lac and Tryptophane operon.

If lactose is present in the medium, the E.coli cells need prodcuts hence the gene will be activated. In case of tryptophane operon, the cells stopes the sysnthesis of trypthophane when they are sufficinet.