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Cell Membrane - Coggle Diagram

- - - - Allow particular molecules to cross through membrane freely
    - - Allow specific substances to bind to the protein by changing its shape
    - - Help the cell recognize self from foreign (non-self) substances
      - Sending the signal to white blood cell in order to attack foreign sunstances
- - - - Movement of materials cross cell membrane without using cell's energy
      - Moving along the concentration gradient/from high to low concentration
    - - Simple Diffusion
        
        Small, Non-polar molecules cross the membrane directly through lipid bilayer
        
        Net movement: high to low concentration
        
        Equilibrium: moving until Net movement stops
      - Facilitated Diffusion
        
        Polar, charged molecules that need protein's help to pass through lipid bilayer
        
        Net movement: high to low concentration
      - Osmosis
        
        A special case of simple diffusion
        
        Focuses on Solvent molecules (water)
        
        Net movement of Water: toward low water concentration (high solute)
        
        Types
        
        Hypotonic: less solute
        
        Hypertonic: More solute
        
        Isotonic: same amount of solute
  - - - Movement of materials cross cell membrane by using cell's energy
      - Moving against the concentration gradient/from low to high concentration
    - - Sodium Potassium Pump
        
        Requires ATP
        
        3 sodium ions + 2 potassium ions = 1 round
        
        Sending sodium ions and potassium ions in/out the cell