The carbon atoms that enter the citric acid cycle via acetyl CoA are the same ones released as carbon dioxide during one round of the citric acid cycle.

Question

Quizplus · Accepted Answer

The carbon atoms released as CO2 during one round of the citric acid cycle are not the same ones that entered via acetyl CoA; they are derived from the oxaloacetate molecule that combines with acetyl CoA. The newly added carbons are released in subsequent cycles.

The Carbon Atoms That Enter the Citric Acid Cycle Via