Question

What is the gross calorific value of proteins?

(a) 4 kcal/g

(b) 5.65 kcal/g

(c) 9 kcal/g

(d) 9.45 kcal/g

The question was asked in an international level competition.

My doubt stems from Disorders in Digestive System topic in chapter Digestion and Absorption of Biology – Class 11

Answer 1

Right answer is (b) 5.65 kcal/g

Best explanation: The gross calorific value of proteins is 5.65 kcal/g while the physiologic value of proteins is 4 kcal/g. The gross calorific value of carbohydrates and fats is 4.1 kcal/g and 9.45 kcal/g respectively.