Which of the following substances has the highest amount of energy in joules per unit weight?
-
A.
Carbohydrates -
B.
Proteins -
C.
Fats -
D.
Vitamins
Correct Answer: Option C
Explanation
Fats and ethanol have the greatest amount of food energy per mass, 37 and 29 kJ/g (8.8 and 6.9 kcal/g), respectively. Proteins and most carbohydrates have about 17 kJ/g (4 kcal/g)