The main functions of citric acid cycle are:
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It helps in step by step release of energy during aerobic respiration.
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Carbohydrates, fatty acids and amino acids are breakdown by this common oxidative pathway.
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Acetyl CoA produces compounds for the synthesis of fatty acids, carotenoids, terpenes and gibberellins.
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Succinyl CoA is involved in the synthesis of pyrrole compounds of chlorophyll and phytochrome.