This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Oxidation of odd-chain fatty acids result in the production of which of the following? 
Select and explain. 
A. Acetyl CoA, B. Succinyl CoA, C. Propionyl CoA, D. Malonyl CoA
C: Propionyl CoA
Answer: C: Propionyl CoA 
Explanation: Odd chain fatty acids are also oxidised exactly as even chain fatty acids. However, after successive removal of 2-carbon units, at the end, one 3 carbon unit, propionyl CoA is produced. The propionyl CoA is fuher metabolised to Succinyl CoA which enters the TCA cycle. Ref: Vasudevan Biochemistry, 3rd Edition, Page 124