Active Transport

• What is Active Transport?


  Its the movement of particles across a membrane, from low conc to a high conc region; also requires energy from respiration.
• What does 'against the concentration gradient' mean?


  The movement from lower conc, to a higher conc.
• How do root hair cells, use active transport?


  To absorb mineral ions (magnesium and nitrate) from the soil.
• Active transport does REQUIRE ENERGY
• Mitochondria proved the energy needed for active transport
• Humans = glucose is absorbed into the blood from the gut; how are 'Diffusion' and 'Active Transport' involved?


  Answer: