active transport

• active transport

  • lower concentration -> higher concentration
• Root hairs take in minerals using active transport

  • the concentration of minerals is usually higher in the root hair cells than in the soil around them
  • so the root hair cells can’t use diffusion to take up minerals from the soil
  • they use active transport instead
  • this allows the plant to absorb minerals from a very dilute solution in the soil - it moves in he minerals against the concentration gradient
  • active transport needs energy from respiration to work