Biology Biomolecules MDCAT 2019
PMDC Verified Question 110 of 142
The covalent bond or bridge between two monosaccharides to form a disaccharide is called a:
A
Hydroxyl bond
B
Hydrogen bond
C
Glycosidic bond
D
Carboxyl bond
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Glycosidic bond
Concept:

Different biological macromolecules rely on specific signature covalent bonds.

Solution:

  • The specific oxygen bridge formed between two sugar monomers after a condensation reaction is called a glycosidic bond (or glycosidic linkage).


Why other options are incorrect:

  • Peptide bond: Found in proteins.


  • Phosphodiester bond: Found in nucleic acids.


  • Ester bond: Found in lipids.


  • Hydrogen bond: A weak intermolecular force, not the strong covalent bridge uniting monomers.

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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