character: Dr. Smith
topic: Diffusion and Osmosis in Cells
grade: 9
subject: Science
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character: Mr. Johnson
topic: Cell Membrane Structure and Function
grade: 9
subject: Science
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character: Ms. Lee
topic: Passive Transport Mechanisms in Cells
grade: 9
subject: Science
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character: Dr. Carter
topic: Active Transport and Energy in Cells
grade: 9
subject: Science
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