character: Mr. Johnson
topic: Enzymes and Their Functions
grade: 9
subject: Science
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character: Dr. Smith
topic: Catalysts in Biological Reactions
grade: 9
subject: Science
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character: Ms. Davis
topic: The Role of Enzymes in Metabolism
grade: 9
subject: Science
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character: Mr. Thompson
topic: Factors Affecting Enzyme Activity
grade: 9
subject: Science
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