Biology Enzymes ETEA 2023 Retake
PMDC Verified Question 41 of 79
Which of the following is an example of hydrolase?
A
Transmethylase
B
Oxygenase
C
Phosphatase
D
Peroxidase
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Phosphatase
Concept:

Hydrolases are a major class of enzymes that use water molecules to break chemical bonds (hydrolysis).

Solution:

  • A Phosphatase is an enzyme that removes a phosphate group from its substrate.
  • It accomplishes this cleavage by introducing a molecule of water (\( \text{H}_2\text{O} \)) across the bond, effectively hydrolyzing it.
  • Therefore, it securely belongs to the hydrolase category.


Why other options are incorrect:

Transmethylases transfer methyl groups (transferases). Oxygenases and peroxidases facilitate oxidation-reduction reactions (oxidoreductases). None of these rely on water to cleave bonds like hydrolases do.

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