diffusion

    Cards (9)

    • Diffusion
      The net movement of particles from an area of higher concentration to an area of lower concentration
    • Diffusion
      1. Molecules move about randomly
      2. Molecules spread out over time
      3. Molecules become evenly distributed
    • Diffusion can happen in both gases and liquids
    • Partially permeable membrane
      Only some molecules can diffuse through, like water, glucose, and amino acids. Larger molecules like proteins and starch cannot fit through.
    • Diffusion is a passive process that does not require energy from the cell
    • Factors affecting rate of diffusion
      • Concentration gradient
      • Temperature
      • Surface area
    • Larger concentration gradient

      Higher rate of diffusion
    • Higher temperature
      Higher rate of diffusion
    • Larger surface area

      Higher rate of diffusion
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