Biology Acellular Life ETEA 2023
PMDC Verified Question 23 of 70
Which of the following agents can easily pass through the filter paper?
A
Bacteria
B
Fungi
C
Virus
D
Yeast
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Virus
Concept:

Historically, pathogens were categorized by their physical size using unglazed porcelain filters.

Solution:

  • Viruses are sub-microscopic entities (typically \( 20 \) to \( 300 \text{ nm} \)).
  • Due to their extremely small size, they can easily pass through fine bacterial filters that trap larger cellular organisms.


Why other options are incorrect:

  • Bacteria, Fungi, Yeast: These are much larger cellular organisms (typically \( 1 \text{ }\mu\text{m} \) or larger) that are blocked by standard biological filters.

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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