character: Khan Academy
topic: Cell Membrane and Maintaining Homeostasis
grade: 9
subject: Biology
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character: Khan Academy
topic: Structure and Function of the Cell Membrane
grade: 9
subject: Biology
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character: Khan Academy
topic: Passive and Active Transport Across Membranes
grade: 9
subject: Biology
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character: Khan Academy
topic: Cell Signaling and Homeostasis
grade: 9
subject: Biology
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