At the completion of the citric acid cycle, the majority of the chemical energy that was originally present in metabolic fuels is now found in:

Question

Quizplus · Accepted Answer

During the citric acid cycle, metabolic fuels are oxidized and their energy is used to reduce coenzymes, specifically nicotinamide adenine dinucleotide (NAD⁺) and flavin adenine dinucleotide (FAD), to NADH and FADH₂, respectively. These reduced coenzymes carry most of the chemical energy that was originally present in the metabolic fuels and are used in the electron transport chain to produce ATP. While some ATP is produced in the citric acid cycle through substrate-level phosphorylation, the majority of the chemical energy is found in the reduced coenzymes. Therefore, choice B (reduced coenzymes) is the best answer.

At the Completion of the Citric Acid Cycle, the Majority