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Biology revision B1 (Converting Units (Millimetres (mm) (x1000),…

- - - - Enzyme and Where: Lipase in pancreas and small intestine
        
        Product: Fatty acids and glycerol
    - - Amylase in stomach, small intestine and pancreas
        
        Product: Glycerol
    - - Enzyme and Where: Protease in pancreas, salivary glands and small intestine
        
        Product: Amino acids
  - - - One substrate molecule fits neatly into the active site of the enzyme (lock and key)
        
        Some bonds in molecule break causing formation of 2 product molecules
        
        The product is a different shape so no longer fits into active site and is released
        
        Active site is free to accept another substrate molecule
  - - - Higher temperature increases rate of reaction
      - Too hot breaks some bonds holding enzymes together which changes shape of enzymes active site so substrate won't fit anymore. (enzyme has denatured)
      - All enzymes have an optimum temperature they work best as
    - - If too high or too low, the pH interferes with the bonds holding the enzymes together
        
        This changes shape of active site and denatures enzyme
      - All enzymes have an optimum pH they work best at Often pH 7 but not always
        
        Pepsin is an enzyme used to break down protein in stomach. this works best at pH 2 which means it is well-suited to the acidic condition there.
    - - Higher concentration, faster the reaction as more likely for enzyme to meet up and react with a substrate molecule
      - After a specific amount, there aren't enough enzymes for all the substrate molecules (all active sites are full) so adding more makes no difference
- - - - Lens closest to the eye, usually x10 magnification
      - Total Magnification
        
        magnification 1 x magnification 2
    - - 3 lenses with different magnifications.
    - - Controls the amount of light that goes onto the slide
    - - A mirror or an electric bulb
    - - Holds the eyepiece lens above the stage
    - - To focus the image so sharp and clear
    - - Used to focus the image so you can see it clearly