| tricarboxylic acid c. |
the final common pathway for the oxidation to CO2 of fuel molecules, most of which enter the cycle as acetyl coenzyme A; it also provides intermediates for biosynthetic reactions. The cycle occurs in mitochondria and generates ATP by providing electrons to the electron transport chain. See accompanying illustration. Called also Krebs c. and citric acid c. Click here to view image■Tricarboxylic acid cycle. Diagrammatic representation of reactions by which carbon chains of sugars, fatty acids, and amino acids are metabolized to yield carbon dioxide. Water produced by the cycle and components of the high-energy phosphate pool generated by the associated electron chain are not shown.
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