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MMLU / In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde…

Problem

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question

In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?

choices

  1. Nearly all of the enzyme molecules are interacting with acetaldehyde molecules.
  2. The activation energy of the reaction decreases.
  3. The change in free energy of the reaction decreases.
  4. The enzyme is no longer specific for acetaldehyde.

subject

college_biology

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