Upload
verity-mcgee
View
221
Download
2
Tags:
Embed Size (px)
Citation preview
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