NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which viral life cycle kills its host cell by lysing (ie. a fast process)?
A
lytic
B
mitosis
C
lysogenic
D
S phase
Explanation: 

Detailed explanation-1: -Some phages can only reproduce via a lytic lifecycle, in which they burst and kill their host cells.

Detailed explanation-2: -The lytic cycle leads to the death of the host, whereas the lysogenic cycle leads to integration of phage into the host genome. Bacteriophages inject DNA into the host cell, whereas animal viruses enter by endocytosis or membrane fusion. Animal viruses can undergo latency, similar to lysogeny for a bacteriophage.

Detailed explanation-3: -The lytic cycle, or virulent infection, involves a virus taking control of a host cell and using it to produce its viral progeny, killing the host in the process.

Detailed explanation-4: -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-5: -The lytic cycle is a faster process for viral replication than the lysogenic cycle. The lytic cycle begins immediately upon a virus’s invasion of a cell. The virus begins to replicate copies of itself until it causes the host cell to lyse, meaning it bursts open and releases the new viral particles.

There is 1 question to complete.