1. 1.Enzymes are found in all living cells 2.They are protein molecules which speed up chemical reactions in living things. They are called biological catalysts 3.Enzymes work best at certain temperatures and pHs. At other temperatures and pHs they denature (change shape) Enzymes Enzymes

2. Builder Enzymes Enzymes

3. Breaker Enzymes Enzymes

4. Enzyme Substrate

5. Enzymes Enzymes

6. Enzymes

7. Amylase Amylase

8. Protease Protease

9. Digestive Enzymes

10. Lipase Lipase

11. 1.Enzymes are used in; Biological detergents Baby food Making syrup Making sugars for slimming foods 2.They are used to speed up reactions which would otherwise require expensive equipment Uses of enzymes

12. Uses of Enzymes Uses of enzymes

13. 1.Yeast cells convert sugar into carbon dioxide and alcohol. This process is called fermentation. 2.Alcohol is used in beer and wine 3.Carbon dioxide is used to make bread rise 4.Carbon dioxide turns limewater milky Making Beer and Bread

14. Uses of Enzymes

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16. Quiz Quiz