character: Ms. Johnson
topic: Cell Membrane: Structure and Function
grade: 9
subject: Science
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character: Dr. Smith
topic: Introduction to Cellular Structures
grade: 9
subject: Science
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character: Professor Lee
topic: The Importance of the Cell Membrane in Cellular Processes
grade: 9
subject: Science
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character: Mr. Patel
topic: Comparing Plant and Animal Cell Membranes
grade: 9
subject: Science
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