B2 Enzymes

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  • Created by: EllenMIW
  • Created on: 31-12-15 19:23
Advantages of enzymes
Speed up reactions, used over and over again, stops use of expensive, energy-demanding equipment
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Disadvantages of enzymes
Costly to produce, many denatured at high temps, some people are allergic
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Proteins
Made up of long chains of amino acids which are folded to produce a specific shape that allows other molecules to fit into the protein
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Proteins act as...
Catalysts,structural components of tissues and muscles, antibodies, hormones
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Enzymes are...
Biological catalysts and proteins
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High temperatures.....the enzyme
Change the shape of
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Different enzymes work best at...
Different pH values
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Path of digestive enzymes
Produced in lining of gut, move into gut where they come into contact with food molecules
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What do digestive enzymes do?
Catalyse the breakdown of large molecules into smaller molecules
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Amylase
Produced in salivary glands, pancreas and small intestine, catalyses breakdown of starch into sugars in mouth and small intestine
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Protease
Made in stomach, pancreas and small intestine, catalyses breakdown of proteins into amino acids in stomach and small intestine
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Lipase
Made in pancreas and small intestine, catalyses breakdown of lipids into fatty acids and glycerol in small intestine
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Stomach enzymes work best in.... because....
Acidic conditions, the stomach produces hydrochloric acid
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Small intestine enzymes work best in... because...
Acidic conditions, bile neutralises stomach acid
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Biological detergents
May contain proteases and lipases to break down stains, are more effective at low temps than other detergents
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Baby foods
Contain proteases to 'pre-digest' the food
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Carbohydrases
Used to convert starch into sugar syrup
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Isomerase
Used to convert glucose syrup into fructose syrup, which is much sweeter so less can be used in slimming foods
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Other cards in this set

Card 2

Front

Disadvantages of enzymes

Back

Costly to produce, many denatured at high temps, some people are allergic

Card 3

Front

Proteins

Back

Preview of the front of card 3

Card 4

Front

Proteins act as...

Back

Preview of the front of card 4

Card 5

Front

Enzymes are...

Back

Preview of the front of card 5
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