2.13 understand that movement of substances into and out of cells can be by diffusion, osmosis and active transport

Diffusion

  • Oxygen diffusing into blood cells
  • Carbon dioxide diffusing into leaves for photosynthesis

Osmosis

  • When water diffuses into plant cells making the cells turgid

Active Transport

  • Root hair cells actively taking mineral ions such as magnesium for chlorophyll
  • In kidneys, salts are actively uptaken into the blood

 

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