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OCR A Level Biology Resources REVISION NOTES/ TOPIC QUESTIONS and PAST PAPERS (TOP SCORE)
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2.5 Biological Membranes YOUR NOTES 2.5.1 THE CELL SURFACE MEMBRANE Roles of Membranes Membranes are vital structures found in all cells The cell surface membrane creates an enclosed sp ace separating the internal cell environment from the external environment Intracellular membranes (internal memb...
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