Across

3. Insoluble carbohydrate with big molecules.
5. These are needed in very small amounts to keep body processes working properly.
9. Proteins are made up from a string of these(5,4).
12. This is where faeces (mainly indigestible food) is stored.
13. Oesophagus - the tube from mouth to stomach.
15. Muscular organ in your body that churns up food.
17. Type of tubing that is semi-permeable - only small molecules can get through.
18. Needed to drive all life processes.
19. When a diet has a healthy mixture of different foods it is ...
20. Essential elements, like calcium for healthy bones.

Down

1. Type of food that is essential for growth and repair.
2. This is where faeces (mainly indigestible food) finally leaves the body.
4. Type of food that provides energy.
6. Roughage - keeps food moving through the digestive system.
7. Type of food that provides energy.
8. Organ where food is absorbed into the blood.
10. Where food enters the body.
11. All the different foods that are eaten.
14. An organic catalyst - speeds up chemical reactions.
16. A finger shaped projection in the digestive system that helps absorb food into the bloodstream.