2. a diet which has all the necessary food substances in hte right amounts according to the age, gender and body requirements of a person

3. an apparatus specially designed for measuring the energy content of food

4. food substances made up of carbon, hydrogen and oxygen atoms in a fixed ratio, including sugars and their derivatives

5. indigestible food remains from the cell wall of plants in food

6. a molecule made up of two monosaccharides joined together by a chemical condensation reaction

7. amino acids that cannot be synthesized by the body

8. food substances made up of carbon, hydrogen and oxygen, with the hydrogen to oxygen ration much larger than two to one. They are normally made up of a glycerol and up to three fatty acid molecules

9. any substance which contains nutrients

10. basic components of food. Human's food substances are of seven types.

11. inorganic compounds that are important in regulating the metabolism of our body and building some body structures

12. the simplest form of carbohydrates

13. amino acids that can be synthesized by the body

14. a chain of amino acids joined by chemical condensation reactions

15. a complex molecule formed by the chemical condensation of many monosaccharides

16. food substances which are essential to keep us alive

17. food substances needed in small amounts to keep us healthy

18. food substances made up of amino acids. They mainly consist of carbon, hydrogen, oxygen and nitrogen, and often sulphur

19. organic substances that help to regulate metabolism. They are needed in small amounts

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