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Energy Yield of Fat Oxidation

publish date: 2026/06/21 20:08:3.362226 UTC

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Gram for gram, how does the energy yield of fat compare to that of carbohydrates when both are fully metabolized?

Fat yields about the same energy

Fat yields half as much energy

Fat yields a little more than twice as much energy

Fat yields three times less energy

Correct Answer

Fat yields a little more than twice as much energy

Explanation

Fat is a more energy-dense fuel than carbohydrate. When fully metabolized, fat yields a little more than twice as much energy per gram compared to carbohydrates.

Reference

Biology: A self-teaching guide

Quizzes you can take where this question appears

Fats/Proteins