Physics Nuclear Physics DUHS 2023
PMDC Verified Question 23 of 98
Radiations are dangerous to living organism because they damage the cell by:
A
By producing ions in cells
B
By increasing the temperature of cells
C
By decreasing the number of cells
D
By destroying the cells
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: By producing ions in cells


Concept:

Nuclear radiation damages biological tissue primarily through a microscopic, atomic-level mechanism.

Solution:

  • When high-energy particles (alpha, beta, gamma) crash into the water molecules and DNA inside human cells, they carry enough energy to knock electrons out of orbit.


  • This massive creation of ions and highly reactive free radicals severely breaks molecular bonds.


  • These broken bonds corrupt DNA chains, leading directly to cell death or uncontrolled cancerous growth.


Why other options are incorrect:

While cell death (Option D and C) is the result, Option A explains the fundamental physical mechanism of the damage. Radiation heating (Option B) is negligible compared to the ionization trauma.

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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