This video covers
- What diffusion is
- How it works
- How it applies to cell membranes
- The 3 factors that affect the rate of diffusion (concentration gradient, temperature, surface area)

Exam board specific info:

KS3
All relevant to KS3 course

GCSE
AQA - All on your course
IGCSE Edexcel - All on your course
Edexcel - All on your course
OCR 21st Century - All on your course
OCR Gateway - All on your course

A-level
If you're doing A-level biology you also need that longer diffusion distances will decrease the rate of diffusion because the particles have to travel further.

Maths Playlist:
   • GCSE Maths (9-1)  

GCSE Chemistry playlist:
   • GCSE Chemistry - Atoms & Ions  #1  

GCSE Biology Playlist:
   • Video  

GCSE Physics Playlist:
   • Video