GCSE Biology Revision “Diffusion”

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In this video, we look at diffusion. I take you through the concept of diffusion and then we look at three factors that affect the rate of diffusion.

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Image credits:

Cheek cells

https://commons.wikimedia.org/wiki/File:Cheekcells_stained.jpg

Mulletsrokk, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons