Diffusion

Description

GCSE Biology (Cells) Mind Map on Diffusion, created by Olivia Brooklyn on 22/03/2014.
Olivia Brooklyn
Mind Map by Olivia Brooklyn, updated more than 1 year ago
Olivia Brooklyn
Created by Olivia Brooklyn over 10 years ago
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Resource summary

Diffusion
  1. Dissolved substances have to pass through the cell membrane to get into or out of a cell. Diffusion is one of the processes that allows this to happen
    1. Diffusion occurs when particles spread
      1. They move from a region where they are in high concentration to a region where they are in low concentration
        1. This is true in gases and for particles dissolved in solutions
      2. Diffusion happens when the particles are free to move
        1. Particles diffuse down a concentration gradient, from an area of high concentration to an area of low concentration
          1. EG. This is how the smell of cooking travels around the house from the kitchen
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