From the case:
Citric acid cycle (illustration)
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The citric acid cycle, also known as the Krebs cycle or tricarboxylic acid cycle, is a central metabolic pathway in cells. It involves a series of chemical reactions that oxidize acetyl-CoA derived from carbohydrates, fats, and proteins to produce energy in the form of ATP and electron carriers (NADH and FADH2) and release carbon dioxide.