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Free Mode of Enzyme Action MCQs with Answers

22 Mode of Enzyme Action MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Enzyme action depends on the active site forming a temporary enzyme substrate complex, then converting substrate into products with lower activation energy. The lock and key and induced fit models explain specificity and binding, while cofactors and changes in enzyme shape can affect catalysis.

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22 questions · page 2 of 2

21. The substrate binds to a specific region on the enzyme called?

  • A. Key
  • B. Active site
  • C. Hyperactive site
  • D. None of these options are correct

Explanation: The substrate binds to a specific region on the enzyme called the active site.

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Correct answer: Active site

22. The reactants on which enzyme works are:

  • A. Products
  • B. Metabolites
  • C. Substrates
  • D. Catabolites

Explanation: Enzymes work by acting on substrates and converting them into products.

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Correct answer: Substrates
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