Biology Biotechnology KMU 2025
PMDC Verified Question 56 of 65
In molecular diagnostics, the primary function of DNA/RNA probes is to?
A
Bind to specific DNA or RNA sequences for identification
B
Replace malfunctioning genes in affected cells
C
Cut genetic material at precise locations
D
Stimulate immune responses against disease-causing organisms
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Bind to specific DNA or RNA sequences for identification
Concept:

High-affinity complementary nucleic acid hybridization.

Solution:

Probes are engineered single-stranded nucleic acids labeled with a reporter tag that bind specifically to target complementary DNA or RNA sequences, facilitating sequence identification in clinical diagnostic assays.

Why other options are incorrect:

  • Replace malfunctioning genes in affected cells: Functional gene replacement is performed by gene therapy vectors, not diagnostic probes.


  • Cut genetic material at precise locations: Cleaving double-stranded phosphodiester backbones is executed by restriction enzymes.


  • Stimulate immune responses against disease-causing organisms: Antigens in vaccines stimulate immune responses, not labeled diagnostic probes.

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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