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What is the term for a substance that speeds up chemical reactions in living organisms?

  • A Enzyme
  • B Hormone
  • C Vitamin
  • D Antibody
Correct Answer: Option A — Enzyme
Explanation:
Enzymes are biological catalysts, mostly proteins, that speed up specific chemical reactions without being consumed in the process. They low...
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Submitted by: PaperMCQs
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