Enzymes in Digestion (Cambridge (CIE) IGCSE Biology) : Revision Note
Study enzymes and their roles in digestion for your IGCSE Biology exam, including diagrams showing the action of proteases, amylases and lipases.
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Enzymes in Digestion
Amylases
Amylases are produced in the mouth and the pancreas (secreted into the duodenum)
Amylases digest starch into smaller sugars

The digestion of starch
Proteases
Proteases are a group of enzymes that break down proteins into amino acids in the stomach and small intestine (with the enzymes in the small intestine having been produced in the pancreas)

The digestion of proteins
Lipases
Lipase enzymes are produced in the pancreas and secreted into the duodenum
They digest lipids into fatty acids and glycerol

The digestion of lipids
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