A control point outside the citric acid cycle is the reaction catalyzed by
A) the pyruvate dehydrogenase complex.
B) citrate synthetase.
C) isocitrate dehydrogenase.
D) the α -ketoglutarate dehydrogenase complex.

Question

Quizplus · Accepted Answer

The pyruvate dehydrogenase complex catalyzes the conversion of pyruvate into acetyl-CoA, which is a substrate for the citric acid cycle but is not part of the cycle itself, making it a control point outside the cycle.

A Control Point Outside the Citric Acid Cycle Is the Reaction