character: Dr. Sarah Johnson
topic: pH and Its Importance in Biological Systems
grade: 12
subject: Chemistry
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character: Ms. Emily Wright
topic: The Role of Buffers in Maintaining pH in Living Organisms
grade: 12
subject: Chemistry
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character: Mr. John Doe
topic: Acids and Bases in Biological Reactions
grade: 12
subject: Chemistry
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character: Dr. Michael Smith
topic: The Effect of pH on Enzyme Activity
grade: 12
subject: Chemistry
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