Active Transport

Exchange of gases in the lungs

Exchange in the gut

Exchange in other organisms

Exchange in plants


Transport Problems

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Active Transport

  • Low to high concentration gradient, diffusion + Osmosis = High to low.
  • Cells produce most of their energy in the mitochondria
  • Alveoli increase the S.A. of the lungs
  • Capillaries pick up oxygen at the lungs
  • Also moves substances across a cell membrane.
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