character: Dr. Smith
topic: Buffer Systems in the Human Body
grade: 11
subject: Chemistry
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character: Dr. Johnson
topic: Acid-Base Balance and Homeostasis
grade: 11
subject: Chemistry
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character: Ms. Lee
topic: Physiological pH Regulation
grade: 11
subject: Chemistry
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character: Mr. Brown
topic: Chemical Reactions in Metabolism
grade: 11
subject: Chemistry
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