Question

How do proteins differ from fats in their energy value and their role in the body?

Answer 1

The calorific value and physiological fiel value of one gram of protein are 5.65 Kcal and 4 Kcal respectively. Fat has a calorific value of 9.45 Kcal and a physiological fuel value of 9 Kcal per gram. Proteins are the source of amino acids required for growth and repair of body cells. They are stored in the body only to a certain extent. They replace the worn-out protoplasm. They are important for the production of many enzymes. hormones and plasma. The catabolism of amino acids releases toxic nitrogenous wastes which are removed by the kidneys.