Osmosis

Cards (8)

  • Osmosis
    The NET movement of water across a partially permeable membrane from an area of higher water concentration to an area of lower water concentration
  • Isotonic
    Two solutions that have the same water concentration
  • Cells placed in:
    • Pure water burst
    • concentrated sugar solution shrink/becomes flaccid
    • Isotonic solution stay the same
  • Plant cell in pure water
    • Swell
  • Plant cells do not burst when placed in pure water because the cell wall is strong enough to stop it bursting
  • Flaccid / Plasmolysed
    A cell in which the cytoplasm shrinks away from the cell wall completely
  • Plant cell placed in:
    • Equal sugar concentration to cell cytoplasm start to pull from cell wall
    • Weaker sugar solution than cell cytoplasm shrivels
    • Stronger sugar solution than cell cytoplasm swells
  • Plants without woody tissue wilt if they are not given enough water because the stem cells go flaccid