Curriculum
Science — Second Preparatory
Unit 1: Matter and Energy
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Unit 2: Matter and Chemical Reactions
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Unit 3: Energy Flow in Photosynthesis and Respiration
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Unit 4: Geological Processes
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Text lesson
Chemistry of Nutrition
Chemistry of Nutrition
The main nutrients
The main nutrients
- The body needs a balanced diet that supplies energy, supports growth, replaces damaged cells and protects against disease.
- Food contains the following nutrients:
| Comparison aspect | Main idea | Keywords |
|---|---|---|
| Carbohydrates |
| glucosestarchsucrosemain |
| Fats | a store of energy. They form part of cell membranes and help the absorption of some vitamins | storeenergyformpart |
| Proteins | made of units called amino acids. The body uses them to build tissues and muscles and to replace damaged parts. They are also needed to make enzymes and antibodies | madeunitscalledamino |
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