In life cycle of bacteriophage which step occur after attachment of prophage with the receptor site of the bacterial cell wall_____________?
Correct answer: D. Penetration
- A. Absorption
- B. Multiplication
- C. Lysogeny
- D. Penetration
Explanation
After a phage attaches, or adsorbs, to receptors on the bacterial cell wall, it injects its nucleic acid into the host during penetration. Multiplication and lysogeny occur later, so students who choose multiplication are skipping the entry step.
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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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