Multiple choice

Enzymes promote chemical reaction by

  1. reducing the activation energies

  2. causing the release of heat which acts as a primer

  3. increasing molecular motion

  4. changing the free energy difference between substrate and product
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A Correct answer
Explanation

Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to proceed. They provide an alternative reaction pathway with a lower energy barrier, allowing reactions to occur faster under physiological conditions. Enzymes do not change the free energy difference between reactants and products, do not primarily work by releasing heat, and do not just increase molecular motion.

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