character: Ms. Johnson
topic: The Role of Hydrogen Bonds in DNA Structure
grade: 9
subject: Science
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character: Mr. Smith
topic: The Importance of Base Pairs in DNA
grade: 9
subject: Science
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character: Dr. Lee
topic: Chemical Bonds: Ionic vs. Covalent vs. Hydrogen
grade: 9
subject: Science
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character: Ms. Davis
topic: The Structure of Nucleotides in DNA
grade: 9
subject: Science
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