Biology Biomolecules NUMS 2019
PMDC Verified Question 126 of 142
Which of the following is the constituent of RNA molecule?
A
Fatty acids
B
Deoxyribonucleic acid
C
Ascorbic acid
D
Ribonucleic acid
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Ribonucleic acid
Concept:

Basic terminology of genetic macromolecules.

Solution:

  • The acronym RNA directly stands for Ribonucleic acid.


  • Note: While the question phrasing "constituent of RNA molecule" is somewhat tautological and poorly worded in the original exam, "Ribonucleic acid" is the only option that correctly names the molecule itself, distinguishing it from DNA.


Why other options are incorrect:

  • Fatty acids / Ascorbic acid: Completely unrelated lipid and vitamin classes.


  • Deoxyribonucleic acid: This is DNA, a distinctly different molecule featuring a different sugar and the base thymine.

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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