Which enzyme catalyzes the reaction shown?
A) isocitrate dehydrogenase
B) malate dehydrogenase
C) fumarase
D) succinate dehydrogenase
E) none of these

Question

Which enzyme catalyzes the reaction shown? 
A) isocitrate dehydrogenase 
B) malate dehydrogenase 
C) fumarase 
D) succinate dehydrogenase 
E) none of these

Quizplus · Accepted Answer

The reaction shown is the conversion of succinate to fumarate, which is catalyzed by succinate dehydrogenase. Isocitrate dehydrogenase and malate dehydrogenase are involved in the citric acid cycle but not in this specific reaction. Fumarase catalyzes the conversion of fumarate to malate, the reverse reaction of the one shown. Therefore, the correct choice is D, succinate dehydrogenase.

Which Enzyme Catalyzes the Reaction Shown