Multiple choice

The catalytic efficiencies of two different enzymes can be compared by the

  1. Km value

  2. pH optimum value

  3. molecular size of the enzymes

  4. formation of the product

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A Correct answer
Explanation

 The catalytic efficiencies of two different enzymes can be compared by the Km value. Km is the Michaelis-Menten constant which shows the concentration of the substrate when the reaction velocity is equal to one half of the maximal velocity for the reaction.