Repressible operons require that _____ bind to the repressor protein before it can bind to the operator.
A)The product
B)A cofactor
C)A coenzyme
D)The substrate
E)The reactant

Question

Quizplus · Accepted Answer

Repressible operons are controlled by repressor proteins that must bind to the operator to prevent transcription. In these operons, the product of the pathway that the operon encodes for acts as a corepressor, binding to the repressor protein to activate its DNA-binding ability. This allows it to bind to the operator and inhibit transcription.

Repressible Operons Require That _____ Bind to the Repressor Protein