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Across 1. Solution used to test for reducing sugar 5. Contains the elements carbon, hydrogen and oxygen in a specific ratio 7. Reagent used to test for starch 9. A protein used to regulate body reactions 10. Contains the element nitrogen 11. Made up of a small number of amino acids 12. Adult equivalent of deficiency disease of fat soluble vitamin 14. Water is this and as a result many molecules are transported in water by plants and animals 15. Disaccharide and reducing sugar 16. Necessary for producing chlorophyll 17. Deficiency disease associated with water soluble vitamin 19. Stored in the liver of animals 20. Simple sugar 23. Brown paper tests for this 24. Mineral found in green vegetables

Down 1. Chemicals that are made inside a living thing 2. Breaking down molecules into simpler ones 3. Most common form of this vitamin 4. Trace element 6. Reagent containing NaOH used to test for protein 8. Building larger molecules from simpler ones 13. Structural carbohydrate in plants 15. A structural protein 18. Colour change in positive test for protein 21. Composed of glycerol and 3 fatty acids 22. Positive result is blue black for presence of this