Which one of the following amino acids is purely ketogenic ?
Correct answer: B. Leucine
- A. Proline
- B. Leucine
- C. Isoleucine
- D. Phenylalanine
Explanation
Leucine is purely ketogenic because its carbon skeleton forms acetyl-CoA or acetoacetate and cannot provide net glucose. Phenylalanine and isoleucine are both ketogenic and glucogenic.
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