Science notes F5 :Chapter 2 - Part 1

Nutrition & food production

Nutrition (the intake of nutrients by living organisms)
Why food is needed?
–To maintain health
–As a source of energy
–To carry out life process
The basic nutrients that we need include proteins, carbohydrates, fats, vitamins, fibre, minerals & water

Factors affecting the calorie requirement of an individual:
1.Age

–Infant, children & teenagers need more calories than aged
–This is because they are still growing (this processes requires energy)
–Elderly people need less energy because they’re less active

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