Diffusion is net movement
Diffusion is net movement
Diffusion is the net movement of particles from a region of higher concentration to a region of lower concentration. This movement is down a concentration gradient.
Step-by-step lessons on Edexcel GCSE Biology 8.1.3 Factors affecting rate of diffusion. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.