Biology Acellular Life SZABMU 2024
PMDC Verified Question 13 of 70
The lysozyme is involved in which step of the life cycle of bacteriophage?
A
Attachment
B
Assembly
C
Penetration
D
Adsorption
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Penetration
Concept:

Enzymatic degradation is a mechanical necessity for phage entry into bacterial cells.

Solution:

  • Bacteriophages utilize viral lysozyme specifically during the penetration phase.
  • The enzyme weakens the rigid bacterial peptidoglycan cell wall, allowing the phage's central tail core to drive through and inject the viral DNA.


Why other options are incorrect:

  • Attachment/Adsorption: Driven by electrostatic interactions and tail fiber binding.
  • Assembly: The packaging of new virions inside the host, which does not require breaking the wall from the outside.

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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