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B2.3

Enzymes

QuestionAnswer
What is an enzyme? A biological catalyst, which speeds up reactions inside the body
What is the active site of an enzyme? The specially shaped place where the substance that is being catalyzed (the substrate) can fit.
Name three things that enzymes can do Build large molecules from many smaller ones, Change one molecule into another, Break down large molecules into smaller ones
Name 2 factors which affect the rate of enzyme action Temperature, pH level
Name three digestive enzymes Amylase, Protease, Lipase
Where is Amylase produced and what does it do? It is produced by the slavery glands, the pancreas and the small intestine. It catalyses the digestion of starch into sugars in the mouth and small intestine.
Where is Protease produced and what does it do? It is produced by the stomach, the pancreas and the small intestine. It catalyses the breakdown of proteins into aino acids in the stomach and small intestine.
Where is Lipase produced and what does it do? It is produced by the pancreas and small intestine. It catalyses the breakdown of lipids (fats and oils) to fatty acids and glycerol.
Where is bile produced and what does it do? It is produced by the liver and stored in the gall bladder. It is used to neutralise the stomach acid on the small intestine.
Name two ways in which enzymes are use in industry Biological detergents contain proteases and lipases to digest food stains on clothes. They work at lower temperatures than normal washing powerders. Proteases are used to pre-digest proteins in some baby foods
Created by: bhbryden
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