Subdecks (3)

    Cards (22)

    • Osmosis =?
      The diffusion of water molecules across a partially permeable membrane from an area of higher WATER POTENTIAL to an area of lower water potential
    • What does an area of higher water potential have?
      Higher concentration of water molecule
    • What does an area of lower water potential have?

      Lower concentration of water molecules
    • What is water potential?
      The potential of water molecules to diffuse out of or into a solution
    • What do all solutions have?
      A lower water potential than pure water
    • When are two solutions said to be isotonic?
      If 2 solutions have the same water potential
    • What does the rate of osmosis depend on?
      • Water potential gradient
      • Thickness of exchange surface
      • Surface area of exchange surface
    • What happens as osmosis takes place?
      the difference in water potential on either side of the membrane decreases, so the rate of osmosis levels off over time.
    • How does the rate of osmosis depend on the thickness of the exchange surface?

      Thinner exchange surface = faster rate of osmosis
    • How does the rate of osmosis depend on the surface area of the exchange surface?
      The larger the surface area = faster rate of osmosis