Biology Biomolecules NUMS 2022
PMDC Verified Question 69 of 142
Hydrolysis is the breakdown of polymers into its monomers by the addition of:
A
Nitrogen
B
Hydrogen
C
Hydroxyl group
D
Water
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Water
Concept:

Hydrolysis literally translates to 'water-splitting' (hydro = water, lysis = to break).

Solution:

  • During hydrolysis, polymers are broken down into monomers strictly by the addition of water.


  • The water molecule splits: a hydroxyl group is attached to one monomer, and a hydrogen atom is attached to the other monomer to satisfy their valencies.


  • Digestion reactions in the human body are classic examples of enzyme-controlled hydrolysis.


Why other options are incorrect:

  • Hydrogen / Hydroxyl group: These are individual components of water, but the entire water molecule must be added to facilitate the reaction.


  • Nitrogen: Unrelated to the cleavage of standard glycosidic, peptide, or ester bonds.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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