3 AS Biology resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter AS SubjectClear filter Biology Exam board AQA TopicClear filter Transport Across Membranes Resources Crossword Flashcards Multi-tool Quizsearch Bio - Plasma Membranes AS, Biology 25 flashcards 4.5 / 5 Bio - Diffusion and Active Transport AS, Biology 22 flashcards 4.0 / 5 Bio - Osmosis AS, Biology 15 flashcards Search again