Multiple choice

The calorific values of carbohydrates, proteins and fats respectively are

  1. 4.1 k cal/g, 5.65 k cal/g and 9.45 k cal/g

  2. 5.65 k cal/g, 10 k cal/g and 2.3 kcal/g

  3. 3.1 k cal/g, 9 k cal/g and 6 k cal/g

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbohydrates provide 4.1 kcal/g, proteins provide 5.65 kcal/g, and fats provide 9.45 kcal/g. This explains why fats are the most energy-dense macronutrients at over twice the caloric density of carbohydrates. Option D is incorrect as these are standard physiological fuel values.

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