Multiple choice

Isoenzymes must have which one of the following in common?

  1. v max

  2. optimum temperature

  3. optimum pH

  4. equilibrium constant of reactions
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Isoenzymes (or isozymes) are multiple forms of an enzyme that catalyze the same chemical reaction but are encoded by different genes and may have different kinetic properties, such as different Vmax or Km values. However, because they catalyze the exact same chemical reaction, they share the same equilibrium constant for that reaction.

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