Ketone bodies are by products of metabolism of_____________?
Correct answer: D. Fat
- A. Carbohydrate
- B. Protein
- C. All of the above
- D. Fat
Explanation
Ketone bodies are produced mainly when fatty-acid oxidation supplies more acetyl-CoA than the citric acid cycle can use, such as during fasting or uncontrolled diabetes. Although some amino acids are ketogenic, the standard source in this context is fat.
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