B2 Enzymes and Digestion

All you need to know about enzymes and digestion for biology, B2

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  • Created by: Helen
  • Created on: 08-06-13 18:40
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  • Enzymes and Digestion
    • Digestive enzymes
      • Amylase
        • Converts starch into sugars
        • Where is it made?
          • Pancreas
          • Small intestine
          • Salivery Glands
      • Protease
        • Breaks down proteins into amino acids
        • Where is it made?
          • Small intestine
          • Pancreas
      • Lipase
        • Breaks down Lipids into glycerol and fatty acids
        • Where is it made?
          • Small intestine
      • Bile
        • Neutralises stomach acid
          • Released into the small intestine
          • Produced in the liver
        • Emulsifies fats
          • Breaks fats into smaller droplets
          • The overall surface area is increased
    • Enzymes
      • Temperature
        • Increasing this increases the rate of reaction
        • If this is raised too much, the enzymes denature
        • They work best at around 37oC
      • How do they work?
        • They act as biological catalysts
        • Proteins made up of chains of amino acids
        • They either break things up or join them together
  • Emulsifies fats
    • Breaks fats into smaller droplets
    • The overall surface area is increased
  • Produced in the liver
  • Stomach
    • Where is it made?
      • Small intestine
      • Pancreas
  • Pancreas
    • Where is it made?
      • Small intestine
  • The rate of digestion is increased
    • The chains are folded into unique shapes
      • Proteins made up of chains of amino acids
    • Each enzyme only works for one type of reaction
      • How do they work?
        • They act as biological catalysts
        • They either break things up or join them together
      • Every enzuyme has a unique shape which fits onto a substance
    • What affects the rate of reactions?
      • The pH level
        • What affects the rate of reactions?
          • If it is too high or too low, it denatures the enzymes
          • Every enzyme has an optimum pH level, which is usually neutral 7

        Comments

        Swallowtail

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        A concise mind map that makes good use of colour to separate the key ideas. Try adding some images to the mind map after downloading to aid the memory.

        PARTHENON01

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        A fairly good guide, except that bile is not an enzyme which your mindmap seems to suggest, also the positioning of the information could be changed and improved. See my edited version of this map for a better representation of this critical information

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