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Chapter 12: Transport Processes (Short Distance Intercellular Transport…

- - - - high-low
    - - osmosis
  - - - Completely Impermeable
      - Selectively Permeable
      - Freely Permeable
    - - aquaporins
        
        speed up
    - - ATP
    - - Plasma membrane
        
        govern movement out/in cell
      - vacuolar membrane
        
        accumulation space
      - E.R. & dictyosome membranes
        
        transport materials
        
        intracelluar transport
- - - - cells strong enough for high water absorption
  - - - ability to do work
    - - heat
      - raised pressure
      - raised elevation
    - - cold
      - reduced pressure
      - reduced elevation
  - - - measured in megapascals or bars
      - positive
        
        compressed
      - negative
        
        stretched
    - - number of particles
      - solutes effects
        
        decrease free energy
    - - adhesion to cell walls, membranes, soil
      - always negative
- - - - shrinks from cell wall
        
        plant wilts
        
        can lead to cell death
        
        plasmolysis
        
        incipient plasmolysis
        
        point which protoplast pulled slightly away from wall
- - - - potassium pumps
  - - - pass thru primary cell walls
  - - - one continuous mass
  - - - intercellular space
        
        freely move
    - - cell wall
- - - - cohesive
      - adhesive
    - - Cavitation
        
        breaking of water columns
      - Embolism
        
        air bubble
      - cohesion tension hypothesis
      - transstomatal transpiration
      - transcuticular transpiration
    - - blue light =best #
      - adequate soil moisture
      - prevent heat stress
        
        stress=abscisic acid
        
        guard cells close
      - CAM plants
        
        c3 metabolism
        
        night
  - - - theoried
      - membrane bound molecular pumps
        
        active transport