character: Sam the Chemist
topic: Membrane Proteins
grade: 9
subject: Science
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character: Sam the Chemist
topic: Chemical Reactions
grade: 9
subject: Science
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character: Sam the Chemist
topic: Molecular Structure
grade: 9
subject: Science
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character: Sam the Chemist
topic: Biomolecules
grade: 9
subject: Science
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