Figure 8.3 - Metabolic Pathway

-In Figure 8.3,if enzyme A is a repressible enzyme,compound C would
A)always be in excess.
B)bind to Enzyme A.
C)bind to the corepressor for Gene a.
D)bind to RNA polymerase.
E)bind directly to gene a.

Question

Figure 8.3 - Metabolic Pathway
 
-In Figure 8.3,if enzyme A is a repressible enzyme,compound C would
A)always be in excess. 
B)bind to Enzyme A. 
C)bind to the corepressor for Gene a. 
D)bind to RNA polymerase. 
E)bind directly to gene a.

Quizplus · Accepted Answer

If enzyme A is a repressible enzyme, it means that it is involved in a feedback inhibition mechanism, where the end product of the pathway (compound C) acts as a corepressor and binds to the regulatory site of the enzyme A, leading to a conformational change in the enzyme that inhibits its activity. Therefore, compound C would bind to the corepressor for gene a.