Question

In the presence of lactose, how long does it take for the lac operon to be expressed?

(A) when glucose is more than lactose concentration
(B) when lactose equals glucose concentration
(C) as long as lactose is more than galactose concentration
(D) as long as lactose is more than glucose concentration

Answer 1

the lactose Expresses as long as it is present. when all lactose is converted into glucose and galactose, the reaction stops