[Campbell Biology P.205] All of the following are mechanisms by which enzymes lower activati... | Practice Question

All of the following are mechanisms by which enzymes lower activation energy and speed up a reaction, except for which one, according to the provided text?

  • A: Providing a template for substrates to orient properly.
  • B: Stretching and bending critical chemical bonds in substrates.
  • C: Changing the enzyme's chemical structure permanently after catalysis.
  • D: Creating a microenvironment conducive to the reaction.
  • E: Directly participating in the chemical reaction.

Explanation

The text explicitly states that "Enzymes, like other catalysts, emerge from the reaction in their original form." This means their chemical structure is not permanently changed. Options A, B, D, and E are all mechanisms listed in the bullet points that explain how enzymes lower activation energy.