Which of the following steps in the citric acid cycle directly produces a molecule of ATP (or GTP) ?

A) Citrate → isocitrate
B) Succinate → fumarate
C) Malate → oxaloacetate
D) Succinyl CoA → succinate
E) Isocitrate → α-ketoglutarate

Citric Acid Cycle

A series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins into carbon dioxide and chemical energy.

ATP

Adenosine triphosphate, a high-energy molecule that stores and supplies the cell with needed energy for various functions.

Succinyl CoA

A compound in the citric acid cycle that plays a role in the synthesis of porphyrin for hemoglobin and as an intermediate in several metabolic pathways.