Uploaded February 2026 | Updated September 2026, 1 hour ago
Find your 9s with PLUS. Click the link to try for free freesciencelessons.co.uk/modules/gcse-biology-1-triple
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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.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Biology. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits:
Cheek cells
commons.wikimedia.org/wiki/File:Cheekcells_stained.jpg
Mulletsrokk, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
Find your 9s with PLUS. Click the link to try for free freesciencelessons.co.uk/modules/gcse-biology-1-triple
Teachers, to get PLUS for your school, email schools@freesciencelessons.co.uk
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.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Biology. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits:
Cheek cells
commons.wikimedia.org/wiki/File:Cheekcells_stained.jpg
Mulletsrokk, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
