Final answer:
Acetyl-CoA combines with oxaloacetate to form citrate in the citric acid cycle, undergoing oxidation to release energy carriers like NADH and FADH2.
Explanation:
During the citric acid cycle, acetyl-CoA is combined with a four-carbon oxaloacetate molecule to form a six-carbon citric acid molecule. This process leads to the gradual oxidation of citrate, resulting in the release of carbon dioxide and the production of energy carriers like NADH and FADH2. Eventually, acetyl-CoA is completely oxidized to carbon dioxide, generating ATP, NADH, and FADH2.
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