Enzymes MCQs with answers Page - 3

You will find multiple-choice questions (MCQs) related to #Enzymes here. Go through these questions to prepare effectively for your upcoming exams and interviews.

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Q. Enzymes are most effective in:

  • (A) Non-living systems
  • (B) Living cells
  • (C) High-pressure environments
  • (D) Vacuum conditions

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Q. Which enzyme helps in digestion of fats in the small intestine?

  • (A) Trypsin
  • (B) Lipase
  • (C) Maltase
  • (D) Lactase

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Q. What is the enzyme-substrate complex?

  • (A) Temporary union of enzyme and substrate
  • (B) Product of enzyme reaction
  • (C) Inactive enzyme form
  • (D) Mixture of enzymes

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Q. Which enzyme converts milk sugar (lactose) into glucose and galactose?

  • (A) Amylase
  • (B) Lactase
  • (C) Maltase
  • (D) Sucrase

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Q. The enzyme that helps in protein digestion in the small intestine is:

  • (A) Trypsin
  • (B) Pepsin
  • (C) Lipase
  • (D) Amylase

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Q. Which type of biomolecule are most enzymes composed of?

  • (A) Lipids
  • (B) Carbohydrates
  • (C) Proteins
  • (D) Nucleic acids

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Q. Enzymes can be denatured by:

  • (A) Mild temperatures
  • (B) Low pH or high heat
  • (C) Stable conditions
  • (D) Presence of water

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Q. Which of the following represents the correct sequence in enzyme action?

  • (A) Substrate → Product → Enzyme-substrate complex
  • (B) Enzyme → Product → Substrate
  • (C) Substrate + Enzyme → Enzyme-substrate complex → Product + Enzyme
  • (D) Product → Enzyme → Substrate

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Q. What type of enzyme catalyzes oxidation-reduction reactions?

  • (A) Hydrolase
  • (B) Oxidoreductase
  • (C) Transferase
  • (D) Isomerase

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