Question

The calorific values of lipids and carbohydrates respectively, are:

• A. 15.3 kcals/g and 9.3 kcals/g
• B. 4.5 kcals/g and 9.3 kcals/g
• C. 3.9 kcals/g and 9.3 kcals/g
• D. 9.3 kcals/g and 4.5 kcals/g

Answer 1

The correct option is D 9.3 kcals/g and 4.5 kcals/g

The calorific values of lipids and carbohydrates respectively, are 9.3 kcals/g and 4.5 kcals/g. The calorific value is determined by the presence of unoxidized atoms of carbon and hydrogen. A molecule of fat contains more unoxidized atoms of carbon and hydrogen than a carbohydrate molecule or a molecule of protein.