1.Carbohydrates are macronutrients made of simple sugars and yield 4 cal/g energy.
2. Proteins are macronutrients made of amino acids and also yield 4 cal/g energy.
3. Fats are macronutrients with the highest energy yield, 9 cal/g energy.
Explanation:
Nutrients are essential substance present in our food that are required by our body for proper growth, protection and carrying out various activities.
Nutrients have been divided in following categories :
Depending on the nutrient present in the food, it has been classified as:
Energy giving food which are rich in carbohydrates and fats.
Body building food which are rich in protein.
Protective food which are rich in Minerals and vitamins.