Question Detail

MIC 121 GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES Objective Question
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Question

During the lytic cycle of a bacteriophage, what key event occurs during the 'Penetration (Entry)' stage?
Options
A The phage integrates its genome into the host chromosome.
B The phage interacts with bacterial surface receptors via tail fibres.
C The phage uses lysozyme to break the bacterial cell wall and injects its DNA, while the capsid stays outside.
Correct Answer
D Newly synthesized viral components self-assemble into complete virions.
Correct Answer

Option C is the correct answer.

Detailed Explanation

For Penetration (Entry), the text describes, 'After attachment, bacteriophages use an enzyme called lysozyme in their tails to break down the bacterial cell wall, then use their tails like hypodermic needles to inject their DNA (nucleic acid) into the bacterium. The phage head (capsid) and other remaining components typically stay outside the bacterium.'

Hint

This stage involves getting the viral genetic material inside the host.

Question Info

Course: MIC 121
Topic: GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES
Type: Objective
Difficulty: Not specified
Question 144 of 984
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