Enzymes
- Created by: KateLB
- Created on: 12-12-13 20:40
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- Enzymes
- Biological catalysts and are protein molecules made up of long chains of amino acids
- Five important properties:
- They are ALL proteins
- Each enzyme controls one particular reaction
- They can be used again and again
- They are affected by temperature
- They are affected by pH
- Can build up or break down other molecules
- Types of enzyme
- Amylase
- Produced by the salivary glands, pancreas and small intestine
- Used in mouth and small intestine
- Catalyses the breakdown of starch into sugars (glucose)
- Protease
- Produced by the stomach, pancreas and small intestine
- Used in the stomach and small intestine
- Catalyses the breakdown of protein foods into amino acids
- Lipase
- Produced by the pancreas and small intestine
- Used in the small intestine
- Breaks down fats and oils (lipids) into fatty acids and glycerol.
- Amylase
- Hydrochloric acid
- allows stomach protease enzymes to work effectively
- Creates optimum pH conditions for enzymes
- Produced and used by the stomach
- Bile
- Made in the liver, stored and secreted in the gall bladder.
- Used in the small intestine
- provide alkaline conditions for enzymes to work effectively in the small intestine
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