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Lipid Catabolism Connects to Respiration

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A fatty acid is catabolized through beta-oxidation into two-carbon acetyl groups that enter the citric acid cycle directly as acetyl CoA.

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A hibernating bear's body runs largely on beta-oxidation, feeding its fat reserves' fatty acid chains into the citric acid cycle for months.

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A fatty acid's carbon backbone enters at the citric acid cycle, not earlier in glycolysis.