Question | Answer |
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 |