character: Dr. Smith
topic: Factors Affecting Diffusion
grade: 9
subject: Biology
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character: Mrs. Johnson
topic: Osmosis and Its Effects
grade: 9
subject: Biology
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character: Mr. Lee
topic: Cell Membrane Structure and Function
grade: 9
subject: Biology
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character: Dr. Patel
topic: Concentration Gradients in Biological Systems
grade: 9
subject: Biology
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