Skip to content
Get started
Biology 0610

3. Movement into and out of cells

Diffusion, osmosis and active transport.

  1. 3.1

    Diffusion and osmosis

    Passive movement down a concentration gradient, and the special case of water.

    Full lesson4 questions5 cardsSimulationReview first: 2.1
    • 3.1.1Define diffusion and describe its importance in living organisms.
    • 3.1.2Define osmosis and describe the effects of osmosis on plant and animal cells.
  2. 3.2

    Active transport

    Moving substances against a concentration gradient using energy.

    Full lesson1 questions4 cardsReview first: 3.1
    • 3.2.1Define active transport and explain its importance, including ion uptake by root hairs.