The '''citric acid cycle''' is the common mode of oxidative degradation in eukaryotes and prokaryotes. This cycle, which is alternatively known as the [[Tricarboxylic acid cycle]] (TCA) or the [[Krebs cycle]], marks the "hub" of the metabolic system: it accounts for the major portion of carbohydrate, fatty acid, and amino acid oxidation and generates numerous biosynthetic precursors. The citric acid cycle is therefore amphibolic, that is, it operates both [[Catabolic reactions|catabolically]] and [[Anabolism|anabolically]].
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==[[Electron transport and oxidative phosphorylation]]==
==[[Electron transport and oxidative phosphorylation]]==