character: Physics Mentor
topic: Active Transport vs. Passive Transport
grade: 9
subject: Science
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character: Biology Guide
topic: Cell Membrane Structure and Function
grade: 9
subject: Science
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character: Science Tutor
topic: Diffusion and Osmosis
grade: 9
subject: Science
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character: Chemistry Coach
topic: Membrane Transport Mechanisms
grade: 9
subject: Science
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