character: Dr. Smith
topic: Cell Membrane Transport Mechanisms
grade: 9
subject: Biology
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character: Dr. Lee
topic: Active and Passive Transport
grade: 9
subject: Biology
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character: Ms. Johnson
topic: Osmosis and Diffusion
grade: 9
subject: Biology
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character: Mr. Brown
topic: Cell Membrane Structure and Function
grade: 9
subject: Biology
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