Splat Lipase Protease Carbohydrase Amylase Glucose Glycerol Amino acids Acid Alkali Lipase Protease Carbohydrase Amylase Glucose Glycerol Amino acids Acid.

SplatLipase

Protease

Carbohydrase

Amylase

Glucose

GlycerolAmino acids

Acid

Alkali

Lipase

Protease

Carbohydrase

Amylase

Glucose

GlycerolAmino acids

Acid

AlkaliIntestine

Stomach

Mouth

Intestine

Stomach

Mouth

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

Enzymes –• Amylase – Saliva,

pancreas and small intenstine

• Protease – Stomach juice, Pancreas

• Carbohydrase – Pancreas

• Lipase – Pancreas and Small Intestine

• HCl – Stomach• Bile – Gall bladder

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

Describe then explain

Spit was added to starch and iodine. Each well was taken from the total mixture after 30 seconds.

1

2

3

4 5

6

7

8

Amylase1. 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

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

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 & pepsi

n

Egg white,acid & boiled pepsi

n

SplatLipase

Protease

Carbohydrase

Amylase

Glucose

GlycerolAmino acids

Acid

Alkali

Lipase

Protease

Carbohydrase

Amylase

Glucose

GlycerolAmino acids

Acid

AlkaliIntestine

Stomach

Mouth

Intestine

Stomach

Mouth