In steps 3 and 4 of the citric acid cycle,successive oxidations produce ________ as a waste product and the four-carbon carrier ________. A)CO₂; oxaloacetate B)ADP; oxaloacetate C)CO₂; succinyl-SCoA D)ADP; succinyl-SCoA E)CO₂; malate

Question

Quizplus · Accepted Answer

In step 3 of the citric acid cycle, the oxidation of isocitrate produces NADH as a waste product and alpha-ketoglutarate. In step 4, the oxidation of alpha-ketoglutarate produces NADH as a waste product and succinyl-SCoA, which is a four-carbon carrier. Therefore, choice C, which includes succinyl-SCoA as the four-carbon carrier and no mention of any waste product other than CO2, is the best choice.

In Steps 3 and 4 of the Citric Acid Cycle,successive