character: Cell Membrane Master
topic: Understanding Selective Permeability
grade: 9
subject: Biology
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character: Biology Explorer
topic: Cell Structure and Function
grade: 9
subject: Biology
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character: Science Savvy
topic: Transport Mechanisms in Cells
grade: 9
subject: Biology
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character: Bio Buddy
topic: Diffusion and Osmosis
grade: 9
subject: Biology
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