1. Splat Lipase Protease Carbohydrase Amylase Glucose Glycerol Amino acids Acid Alkali Lipase Protease Carbohydrase Amylase Glucose Glycerol Amino acids Acid Alkali Intestine Stomach Mouth Intestine Stomach Mouth

2. Objectives A* - Explain how specific conditions allow enzymes to do their jobs AND evaluate the results of tests A – Describe the progress of digestion using the keyword names of enzymes AND explain using ideas of enzymes B – Know the purpose of digestion and the food molecules and what they are broken down into AND describe the results of tests

3. Enzymes – Amylase – Saliva, pancreas and small intenstine Protease – Stomach juice, Pancreas Carbohydrase – Pancreas Lipase – Pancreas and Small Intestine HCl – Stomach Bile – Gall bladder

4. Enzymes – Amylase – Digests starch to sugars Protease – proteins to amino acids Carbohydrase – Sugars to smaller sugars Lipase – Fat into glycerol and fatty acids HCl – Optimum conditions Bile – Emulsification and alkaline

5. Describe then explain Spit was added to starch and iodine. Each well was taken from the total mixture after 30 seconds. 1 2 3 45 6 7 8

6. Amylase 1.What are your results? Describe in as much detail as possible. 2.Can you explain your results from test tube A 3.Can you explain why test tube B had different results? Boiled saliva Saliva

7. Lipase 1.What are your results? Describe in as much detail as possible. 2.Phenolphthalein is pink in alkaline conditions and is colourless in acid or neutral conditions. Can you explain your results 3.Why do you add sodium carbonate (alkaline) 4.If you measured the pH of each tube what would you find and why Lipase Boiled lipase Lipase & bile salts

8. Pepsin 1.What are your results? Describe in as much detail as possible. 2.Can you explain your results? 3.Why do you get different results with hydrochloric acid? Pepsin & egg white Egg white & acid Egg white, acid & pepsin Egg white, acid & boiled pepsin

9. Splat Lipase Protease Carbohydrase Amylase Glucose Glycerol Amino acids Acid Alkali Lipase Protease Carbohydrase Amylase Glucose Glycerol Amino acids Acid Alkali Intestine Stomach Mouth Intestine Stomach Mouth