Biology Acellular Life KMU 2024
PMDC Verified Question 8 of 70
Viruses cannot:
A
Excrete
B
Mutate
C
Infect bacteria
D
Crystalize
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Excrete
Concept:

Viruses straddle the line between living and non-living, lacking fundamental biological processes of cellular life.

Solution:

  • Excretion is a physiological process required to eliminate metabolic waste.
  • Because viruses have absolutely no internal metabolism or energy production, they produce no metabolic waste and therefore cannot excrete.


Why other options are incorrect:

  • Mutate, Infect bacteria, Crystalize: Viruses routinely mutate (e.g., flu variants), phages infect bacteria, and they can be crystallized (as proven by W.M. Stanley) because of their symmetrical, predictable biochemical structure.

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