Question

True or false? the mechanism by which glucose inhibits expression of the lac structural genes is known as catabolite stimulation, whereas the mechanism by which lactose stimulates expression of the lac structural genes is known as allosteric regulation.

Answer 1

The correct answer id FALSE.
Yes, allosteric regulation is the process wherein the lactose binds to the lac repressor and inactivates it by causing the shape it change. However, the process by which glucose causes cAMP levels in the cell to drop, therefore preventing CAP from stimulating expression of the lac structural genes, is known as catabolite repression and not catabolite stimulation.