NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a Lytic infection?
A
Integrates its DNA (provirus) into the host cell’s chromosomes
B
Redirects the host into making more virus particles, the host cell breaks down (Lyses) and releases the virus
C
Breaks down the cell’s cytoplasm membrane
D
All the above
Explanation: 

Detailed explanation-1: -Lytic infection involves the replication of a viral genome. This genome is packaged into a viral coat and released from the cell. This process of viral release from the cells results in lysis of cells, and hence, it is termed the ‘lytic phase’.

Detailed explanation-2: -In a lytic cycle, the virus introduces its genome into a host cell and initiates replication by hijacking the host’s cellular machinery to make new copies of the virus. Once infection is complete, the newly replicated and assembled virus particles are released through lysis of the host cell into the surrounding waters.

Detailed explanation-3: -The lytic cycle is named for the process of lysis, which occurs when a virus has infected a cell, replicated new virus particles, and bursts through the cell membrane. This releases the new virions, or virus complexes, so they can infect more cells.

Detailed explanation-4: -Lytic phages take over the machinery of the cell to make phage components. They then destroy, or lyse, the cell, releasing new phage particles. Lysogenic phages incorporate their nucleic acid into the chromosome of the host cell and replicate with it as a unit without destroying the cell.

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