Nutrition

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Nutrition means supply of the essential organic and inorganic chemical compounds such as proteins, vitamins, and salts to the body. These substances are called nutrients and they are needed for growth…

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Food is any substance which is eaten or drunk and which contains nutrients. Milk, bread, egg, fish, and apple are examples of food because they provide useful nutrients to the body.

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Diet is the combination of food items eaten in meals. A balanced diet includes food items that supply all the necessary nutrients in proper quantity.

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Living organisms need food for growth, repair of worn-out cells, energy, maintenance of chemical composition of cells, making secretions like enzymes and hormones, and protection from disease and infe…

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A balanced diet is one which includes food items that supply all the necessary nutrients in proper quantity. It also provides enough calories for daily energy needs.

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A calorie is the amount of heat required to raise the temperature of one gram of water by one degree Celsius. A kilocalorie is 1000 times the unit calorie and is written as Kcal.

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1 mole of glucose releases 686 kilocalories of energy. Glucose is a simple sugar and an important energy source in the body.

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Carbohydrates are compounds of carbon, hydrogen, and oxygen. They are oxidised in cells to release energy and are the principal energy source in the body.