Biology Biomolecules NUMS 2022
PMDC Verified Question 74 of 142
Which of the following molecules would yield glucose and fructose on hydrolysis?
A
Maltose
B
Sucrose
C
Starch
D
Lactose
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Sucrose
Concept:

Disaccharides yield two monosaccharide monomers upon hydrolysis (the breaking of the glycosidic bond).

Solution:

  • Sucrose (table sugar) is a disaccharide composed of an alpha-glucose molecule linked to a beta-fructose molecule.


  • When hydrolyzed by the enzyme sucrase (or dilute acid), it strictly yields one molecule of glucose and one molecule of fructose.


Why other options are incorrect:

  • Maltose: Yields two molecules of glucose.


  • Lactose: Yields one glucose and one galactose.


  • Starch: A polysaccharide that yields thousands of glucose units, not fructose.

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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