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Movement across Cell Membrane (Physiological Process (Active Process…

- - - - Facilitated Transport
        
        Movement follows concentration gradient
        
        Only transport specific solute
        
        Requires membrane proteins
    - - constant motion
        
        High to low concentration
        
        turns into
        
        Diffusional Equilibrium
        
        Doesn't occur in organisms
        
        Organisms reach steady state.
        
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        concentration remains same
        
        Random
        movement
        
        But no further net movement
    - - Low to High concentration
      - Osmotic Pressure
        
        Cells in Body
        
        Isotonic
        
        Same osmotic pressure
        
        No change in Cell size
        
        Hypotonic
        
        Lower osmotic pressure
        
        Higher concentration inside of cell
        
        Cells swell
        
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        Hypertonic
        
        Higher osmotic pressure
        
        Higher concentration outside cell
        
        Cells shrink
    - - With pressure, molecules forced through membranes
        
        Separates solids from liquid
- - - - Both endocytosis & Exocytosis move particles through cell layer
    - - Transport substances out of cell
    - - 3 forms
        
        Phagocytosis
        
        Cell engulfs solids
        
        Pinocytosis
        
        Ingestion of liquid
        into a cell
        
        Receptor-Mediated Endocytosis
        
        Specific molecule ingested into cell
      - Engulfing substance from outside the cell
        
        Bring into cell