character: Ms. Sarah Lee
topic: The role of hydrogen bonding in biological systems
grade: 12
subject: Chemistry
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character: Dr. Emily Carter
topic: Hydrogen bonds in DNA structure
grade: 12
subject: Chemistry
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character: Mr. James Smith
topic: Hydrogen bonding and water properties in living organisms
grade: 12
subject: Chemistry
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character: Ms. Olivia Johnson
topic: Hydrogen bonds in protein folding
grade: 12
subject: Chemistry
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