(a) List all those components of food that provide nutrients. (b) Mention two components of food that do not provide nutrients.

(a) Components of food that provide nutrients are carbohydrates, fats, proteins, vitamins and minerals.

Carbohydrates

It is one of the main sources of energy for human beings. It comprises three types of carbohydrates and they include fibre, sugar, and starch. 

Fats

It is one of the most important sources of calories. One gram of fat consists of 9 calories. It is almost twice of calories that we get from carbohydrates and proteins.

Protein

They are made of amino acids. We can obtain protein in foods such as nuts, lentils, beef, rice, chicken etc.

Vitamins And Minerals

Vitamins and minerals are both essential nutrients which are required in a daily diet. Altogether, there are 13 essential vitamins and many minerals which are required for the body to function properly and to maintain the optimal health.

(b) Components of food that do not provide nutrients are roughage and water.

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