character: Professor Johnson
topic: Enzymes as Biological Catalysts
grade: 9
subject: Science
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character: Dr. Emily Carter
topic: Chemical Reactions and Enzyme Function
grade: 9
subject: Science
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character: Mr. Alan Smith
topic: The Role of Enzymes in Metabolism
grade: 9
subject: Science
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character: Ms. Sara Lee
topic: Enzyme Activity and Factors Affecting It
grade: 9
subject: Science
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