Multiple choice

The transition state of a catalyzed reaction is

  1. enzyme bound and very slow in the presence of catalyst

  2. lower in energy than that of an uncatalyzed reaction

  3. higher in energy than that of an uncatalyzed reaction

  4. lower in energy than the reaction substrate
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B Correct answer
Explanation

Enzymes catalyze reactions by lowering the activation energy required to reach the transition state. This means the transition state in a catalyzed reaction is energetically more favorable (lower in energy) compared to an uncatalyzed reaction. However, the transition state still has higher energy than both the substrate and product.

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