1 GCSE Biology resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter GCSE SubjectClear filter Biology Exam board CIE TopicClear filter Diffusion and osmosis. Resources Flashcards Multi-tool DIFFUSION, OSMOSIS, ACTIVE TRANSPORT AND SURFACE AREA TO VOLUME RATIO. GCSE, Biology 41 flashcards Search again