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What is The only part of an odd chain fatty acid that is glucogenic: and explain in detail?
Fatty acids with an odd number of carbon atoms are oxidized by  the  pathway  of  β-oxidation  described above producing acetyl CoA until a three-carbon (propionyl-CoA) residue remains. This compound is converted to succinyl-CoA, a constituent of the citric acid cycle. Hence, the propionyl residue from an odd-chain fatty acid is the only part of a fatty acid that is glucogenic.
HARPERS ILLUSTRATED BIOCHEMISTRY30th ed page no.225