diffusion

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  • diffusion
    • diffusion is the gradual movement of particles from places where there are lots of them to places where is fewer of them.
      • natural tendency for stuff to spread out
        • it happens in solutions and gasses- particles in the substances are free to move about randomly.
          • simplest type is when gasses diffuse through eachother.
    • cell membranes
      • hold cell together and let stuff in and out.
      • dissolved substances can ove by diffusion
        • diffusion
          • diffusion is the gradual movement of particles from places where there are lots of them to places where is fewer of them.
            • natural tendency for stuff to spread out
              • it happens in solutions and gasses- particles in the substances are free to move about randomly.
                • simplest type is when gasses diffuse through eachother.
          • cell membranes
            • hold cell together and let stuff in and out.
            • dissolved substances can ove by diffusion
              • things that can diffuse through (smaller)
                • glucose
                • oxygen (for respiration)
                • amino acids
                • water
              • things that cant diffuse through (bigger)
                • starch
                • proteins
              • particles flow through from a high concentration to a low concentration
              • they move about randomly so go both ways
                • if there is a lot more on one side theres a net movement  on that side
            • affected by
              • light
              • temperature
              • Untitled
        • things that can diffuse through (smaller)
          • glucose
          • oxygen (for respiration)
          • amino acids
          • water
        • things that cant diffuse through (bigger)
          • starch
          • proteins
        • particles flow through from a high concentration to a low concentration
        • they move about randomly so go both ways
          • if there is a lot more on one side theres a net movement  on that side
      • affected by
        • light
        • temperature
        • Untitled

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