B4 Mind map (the basics)

This mind map lays out the basis of Module B4 - The Proesses of Life.

It includes:

  • Enzymes,
  • Diffusion
  • Photosynthesis
  • Respiration
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  • Created by: Maddie!
  • Created on: 22-11-12 19:11
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  • B4
    • Diffusion
      • Diffusion is the passive overall movement of particles from a region of their higher concnetration to a region of their lower concerntration
      • Osmosis
        • Osmosis is the overall movement of water from a dilute to a more concentrated solution through a partially permeable membrane
      • Active transport
        • Active is the overall movement of chemicals across a cell membrane from a region of lower concentration to a region of higher concentration using energy released by respiration
    • Enzymes
      • Enzymes are proteins that speed up chemical reactions
      • 'Lock and Key' model
        • Enzymes only speed up one reaction, so a substrate has to be the correct shape to fit into the enzymes actrive site
      • Temperature and pH
        • At first, the higher the temperature, the faster the reaction but if it gets too hot the reaction time slows down and the active site will become denatured
        • If the pH is too high or too low, it interferes with the bonds holding the enzyme together - which denatues the active site
          • At first, the higher the temperature, the faster the reaction but if it gets too hot the reaction time slows down and the active site will become denatured
    • Respiration
      • Aerobic respiration
        • This type of respiration uses oxygen and produces lots of energy, and we use it most of the time
      • Anaerobic respiration
        • This type of respiration does not use oxygen and releases short bursts of energy when the body can't provide oxygen to our muscles
    • Photosynthesis
      • Photosynthesis is a series of chmical reactions that uses energy from sunlight to produce food

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