Active transport

• What is active transport ?

  moves substances from a more dilute solution to a more concentrated solution (against the concentration gradient )
• Active transport requires energy from respiration
• What is the difference between diffusion and active transport ?

  • Diffusion moves down the concentration
  • does not require energy from respiration
  • Active transport moves against the concentration gradient
  • requires energy from respiration
• What is an example of active transport in plants?

  allows root hair cells to absorb mineral ions required for healthy growth from dilute solutions in soil