Phage virus secretes an enzyme called "lysozyme" form its
Correct answer: B. Tail region
- A. Head region
- B. Tail region
- C. Neck region
- D. Capsule region
Explanation
The phage virus uses its tail region to secrete lysozyme, an enzyme essential for breaking down the bacterial cell wall during the penetration phase of infection. This allows the phage to inject its genetic material into the host cell. The head region primarily stores genetic material, the neck region acts as a connector, and the capsule region is not applicable in this context. Therefore, the correct answer is the tail region.
This question appeared on the ETEA MDCAT 2011 paper, which you can sit online with every answer explained.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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