Question

consider the biochemical pathway below, where a, b, and c are substrates and products and e1 and e2 are the enzymes that catalyze the reactions. if enzyme 1 (e1) is inactive, which of the following compounds will accumulate? multiple choice a only b and c b only a and b

Explanation:

Step1: Analyze enzyme - substrate relationship

If enzyme E1 is inactive, the reaction A→B cannot occur. Since the conversion of A to B is blocked, A will accumulate as it has no way to be converted further. And since no B is produced (because E1 is inactive), the reaction B→C catalyzed by E2 also cannot proceed, so B will not accumulate and neither will C.

Answer:

A. A only