character: Mr. Brown
topic: Cell Membrane Structure and Function
grade: 9
subject: Biology
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character: Cell Membrane
topic: Phospholipid Bilayer
grade: 9
subject: Biology
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character: Osmosis
topic: Role in Cell Membrane Function
grade: 9
subject: Biology
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character: Protein Channels
topic: Transportation Across Cell Membrane
grade: 9
subject: Biology
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