1.9: Summary
- Page ID
- 2374
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- Ions are charged particles, and electrolytes are solutions of ions in water.
- Carbohydrates are made of carbon with hydrogen and oxygen (in the same ratio as water) linked together. The cell mainly uses carbohydrates for energy.
- Fats are also made of carbon, hydrogen and oxygen. They are a powerful energy source, and are also used for insulation.
- Proteins are the building materials of the body, and as enzymes make cell reactions happen. They contain nitrogen as well as carbon, hydrogen and oxygen.
- Many also contain sulphur and phosphorous.