Dissolved Substances, Diffusion and Organisms

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Dissolved Substances 

Your cells need to take in substances such as glucose and oxygen for respiration. Dissolved substances and gases can move in and out of your cell across the cell membrane. One of the main ways in which they move is by diffusion 


Diffusion is the spreading out of the particles of a gas, or any substance in a solution. This results in the overall movement of particles.

This movement is from an area of high concentration to an area of lower concentration. The greater the difference in concentration, the faster the rate of diffusion.

Temperature also affects


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