2019-10-30T15:43:47+03:00[Europe/Moscow] en true Osmosis, water potential, Hypotonic, Hypertonic, Isotonic, pure water, solute potential, pressure potential (ΨP), Turgid, Plasmolysis, Lysis, Incipient plasmolysis, Water potential equals 0, Pressure potential equals 0, Fully plasmolysed, Organic solvents (ethanol) flashcards
Water potential

Water potential

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  • Osmosis
    Diffusion of water through a selectively permeable membrane down the water gradient
  • water potential
    The tendency for water to move in or out of a system via osmosis
  • Hypotonic
    Relatively low concentration/ high water potential
  • Hypertonic
    higher concentration of solute/ lower water potential
  • Isotonic
    equal concentration
  • pure water
    Highest water potential psi 0
  • solute potential
    Solutes that lower the water potential
  • pressure potential (ΨP)
    Provided by the cell wall pushing back and the hydrostatic pressure build on the inside
  • Turgid
    Plant cell that hold as much water a possible
  • Plasmolysis
    Cytoplasm and membrane shrink and pull away from the membrane
  • Lysis
    Animal cell bursting
  • Incipient plasmolysis
    50% of the membrane and cytoplasm has plasmolyised
  • Water potential equals 0
    Solute potential = pressure potential
  • Pressure potential equals 0
    Water potential = solute potential
  • Fully plasmolysed
    Water potential is greater than solute of external medium
  • Organic solvents (ethanol)
    Dissolves the phospholipids and membrane structure which creates large holes