Question

fatty acids with an odd number of carbons are modified by carboxylation of propionyl CoA to ultimately generate the 4 carbon TCA intermediate_____ a. citric acid b. succinyl CoA c. Fumaric acid d. oxalic acid CoA e. Acetyl CoA

Answer 1

Dear friend your answer is                 b. succinyl CoA

Please see below for proof

Odd-numbered fatty acids
Fatty acids with odd numbers of carbons are found in some marine animals, in many herbivores, in microorganisms, and in plants. These fatty acids are subjected to ?-oxidation in the same way as fatty acids with even numbers of carbons. However, the final ?-oxidation spiral results in the production of the three-carbon compound propionyl-CoA, which cannot be metabolized in the same way as acetyl- CoA. Instead, propionyl-CoA is converted to succinyl-CoA, a TCA cycle intermediate, via a three enzyme pathway.

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