In the first step of the citric acid cycle,acetyl-SCoA reacts with ________ to produce ________,which is isomerized to ________ in the second step.
A)succinate; fumarate; malate
B)succinate; malate; fumarate
C)oxaloacetate; isocitrate; citrate
D)oxaloacetate; citrate; isocitrate
E)aconitase; isocitrate; citrate

Question

Quizplus · Accepted Answer

In the first step of the citric acid cycle, acetyl-CoA reacts with oxaloacetate to produce citrate, which is then isomerized to isocitrate in the second step. Therefore, the correct choice is D, where oxaloacetate reacts with acetyl-CoA, leading to the formation of citrate, which is isomerized to isocitrate in the second step.

In the First Step of the Citric Acid Cycle,acetyl-SCoA Reacts