B3.1

HideShow resource information
View mindmap
  • B3.1 - Movement of molecules in and out of cells
    • Osmosis: Movement of water; dilute solution to a concentrated solution; through a PPM.
    • Active Transport: Against concentration gradient; require energy from respiration
      • Osmosis: Movement of water; dilute solution to a concentrated solution; through a PPM.
    • Replacing substances: Exercise uses glucose, water and ions are lost by sweat.
      • Drinks: Most soft drinks contain water, sugar and ions. Sports drinks contain higher amounts of sugar to replace sugar used in energy release.
        • B3.1 - Movement of molecules in and out of cells
          • Active Transport: Against concentration gradient; require energy from respiration
            • Replacing substances: Exercise uses glucose, water and ions are lost by sweat.
              • Drinks: Most soft drinks contain water, sugar and ions. Sports drinks contain higher amounts of sugar to replace sugar used in energy release.
              • Exchanging materials in humans
                • Alveoli in the lungs - Tiny air sacs in the lugs where exchange of O and CO2 takes place; excellent blood supply; thin capillary walls for short diffusion path
                • Villi in the small intestine: Large surface area for exchange; extensive network of blood capillaries to maximise absorption; thin walls short diffusion path
                  • Alveoli in the lungs - Tiny air sacs in the lugs where exchange of O and CO2 takes place; excellent blood supply; thin capillary walls for short diffusion path
        • Exchanging materials in humans
          • Villi in the small intestine: Large surface area for exchange; extensive network of blood capillaries to maximise absorption; thin walls short diffusion path

        Comments

        No comments have yet been made

        Similar Biology resources:

        See all Biology resources »See all Movement of molecules in and out of cells resources »