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1. Give 4 reasons why you need a healthy diet. (lesson 16a)
2. A healthy diet should include p------s, c-----------s, f--s, v------s and m------s. (16a)
3. Why does your body need proteins? (16a)
4. What is the test for starch? (16a)
5. What are the 4 types of teeth?
6. What is the hard, white substance that covers our teeth? (16b)
7. How does tooth decay start? (16b)
8. What happens to large molecules when they are digested? (16c)
9. What is made when starch is digested? (16c)
10. What are the small molecules called that make up proteins? (16c)
11. Why must food be digested before it can be used by your body? (16c)
12. What is the name of the straight, muscular tube leading from your mouth to your stomach? (16d)
13. Where is acid added when your body is digesting food? (16d)
14. Where is digestion completed and food passed into your blood? (16d)
15. Why is fibre important in digestion? (16d)

ANSWERS

1. To grow, repair damaged cells, get energy and stay healthy.
2. Proteins, carbohydrates, fats vitamins and minerals.
3. For growth. They make new cells and repair damaged tissue.
4. Iodine solution turns blue/black.
5. Incisors, canines, premolars, molars.
6. Enamel.
7. Bacteria grow on food and form plaque. The bacteria makes acid which attacks the enamel, making a hole in your tooth.
8. They are broken down into very small molecules.
9. Sugar.
10. Amino acids.
11. So that it can pass through your gut wall and into your blood.
12. The gullet.
13. In the stomach.
14. In the small intestine.
15. It adds bulk and a solid shape to your food so it can be pushed along your gut.