character: Ms. Martinez
topic: Functions of the Cell Membrane
grade: 9
subject: Biology
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character: Mr. Johnson
topic: Structure of the Cell Membrane
grade: 9
subject: Biology
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character: Dr. Lee
topic: Transport Mechanisms in Cells
grade: 9
subject: Biology
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character: Ms. Chen
topic: Cell Membrane Fluidity
grade: 9
subject: Biology
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