active transport

• whats the difference between active transport & diffusion


  1. diffusion is when substances move down their concentration gradient from high to low ( passive process )
  2. active transport is the movement of molecules against their concentration gradient from low to high ( req energy from cell - active process)
• whats active transport

  1. the movement of molecules across a cell membrane from a region of low concentration to high

  • active process
• were does the energy come from?

  1. cellular respiration, mainly happens in the mitochondria when it breaks down glucose to release energy

  • the process is responsible for all energy that the cell uses
• an example of when its used ?

  1. to help with this, the plant has a network of roots (root hair cells)
  2. adapted to their role with long hair-like folicules which stick out in the soil to get those minerals
  3. couldn't use diffusion as there is a higher concentration of magnesium & nitrates inside the cell
  4. there is alot of Mitochondria in the cells which they need to the cellular respiration to get the minerals