character: Mr. Johnson
topic: Chloride Channels in Cell Membranes
grade: 10
subject: Biology
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character: Dr. Smith
topic: Ion Channels and Their Functions
grade: 10
subject: Biology
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character: Ms. Lee
topic: Membrane Protein Types
grade: 10
subject: Biology
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character: Mr. Brown
topic: Cell Membrane Structure and Function
grade: 10
subject: Biology
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