character: Cell Membrane
topic: Selective Permeability in Diffusion
grade: 9
subject: Biology
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character: Osmosis
topic: Movement of Water Across Cell Membranes
grade: 9
subject: Biology
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character: Facilitated Diffusion
topic: Transport Proteins in the Cell Membrane
grade: 9
subject: Biology
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character: Active Transport
topic: Energy-Dependent Movement of Molecules
grade: 9
subject: Biology
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