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nmdcat.online July 11, 2026

A decrease in the activation energy of a reaction in the presence of an enzyme results in

A. An increase in the number of substrate molecules reaching the transition state
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B. A permanent change in the enzyme's primary structure
C. The reaction becoming endergonic instead of exergonic
D. A decrease in the total free energy released by the reaction

📝 Explanation

By lowering the activation energy, enzymes allow a much larger proportion of substrate molecules to reach the transition state at a given temperature, increasing the reaction rate.

📖 Additional Information

  • An increase in the number of substrate molecules reaching the transition state
  • A permanent change in the enzyme's primary structure
  • The reaction becoming endergonic instead of exergonic
  • A decrease in the total free energy released by the reaction

By lowering the activation energy, enzymes allow a much larger proportion of substrate molecules to reach the transition state at a given temperature, increasing the reaction rate.

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