Active Transport

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  • Created by: Jo Wells
  • Created on: 02-04-13 18:06
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  • Active Transport
    • Root Hairs
      • Specialised for absorbing water and minerals
      • Have lots of root hair cells
        • Large surface area
      • Concentration of minerals is usually higher in root hair cell than in soil
        • Normal diffusion wouldn't work
          • Would go the other way
        • Due to ACTIVE TRANSPORT
          • Works against a concentration gradient
          • Needs energy released from respiration
    • Humans
      • Is used when there is a low concentration of nutrients in the gut, but a high concentration in the blood
        • Active transport allows nutrients to be taken into the blood
          • Despite the fact the concentration gradient is the wrong way


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