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Question
List the six main purposes for which food is required by the body.
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Solution
Need for food by the body:
(1) Growth: Food is necessary for building new protoplasm or cells. This helps in the growth of an organism.
(2) Repair: Food provides materials for the repair of worn out or damaged cells and tissues.
(3) Energy: We obtain energy from food. This energy is required for carrying out various life functions.
(4) Maintenance: Nutrients obtained through food help to maintain the chemical composition of cells.
(5) Provision of raw materials: Raw materials required for the synthesis of products such as enzymes, hormones, sweat, milk, etc. are obtained through food.
(6) Protection: Food provides protection from diseases and infection.
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