Transcript Digestion of Food 8A5

8A5 Digesting food
Where does digestion happen?
Point to the part of the diagram where each type of food is
digested.
Click to reveal the answers.
1. starch
3. proteins
2. fat
Enzymes
• Enzymes break up large molecules into small molecules.
(enzymes)
large molecules  small molecules
• The enzyme amylase converts starch to glucose.
(amylase)
starch  glucose
• The enzyme lipase converts fat to fatty acids and
glycerol.
(lipase)
fat  fatty acids + glycerol
Enzymes
• Proteases split up proteins into amino acids.
(protease)
proteins  amino acids
Diffusion
• Small molecules diffuse through the walls of the villi.
Do you know what happens to glucose?
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Glucose is carried by the blood to the liver.
The liver changes glucose into glycogen.
Glycogen is stored.
When cells need more energy, glycogen is changed
back into glucose and delivered to each cell.
Enzyme matching game
Which enzyme is needed to digest which food?
Click to reveal the answers.
1. potatoes
6. cream
2. chicken
amylase
protease
3. pasta
lipase
5. beans
4. olive oil