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The figure illustrates the energy states associated with the reaction A + B ↔ C + D. Which of the following represents the activation energy required for the enzyme-catalyzed reaction in the figure?

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The figure illustrates the energy states associated with the reaction A + B ↔ C + D. Which of the following represents the activation energy required for the enzyme-catalyzed reaction in the figure?

Quizplus · Accepted Answer

The activation energy is the energy difference between the reactants and the transition state. In the figure, the activation energy for the enzyme-catalyzed reaction is represented by the energy difference between the reactant complex (B+A) and the transition state (TS). The correct representation is given by the lower curve of option B, which shows the transition state energy barrier as the activation energy.

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