NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following describes the lytic cycle?
A
A virus uses a host cell’s resources to replicate. The new viruses lyse the cell and cause its death
B
A virus incorporates its nucleic acid into a host cell’s DNA. The infected cell divides many times
C
A virus replicates its DNA and grows in size, after which it uses mitosis and cytokinesis to divide in two
D
Viruses of opposite sex produce gametes that are able to fuse in fertilization to produce a zygote cell
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -Expert-Verified Answer. Answer: The correct answer is B) Unlike the lysogenic cycle, the lytic cycle involves destruction of the host.

Detailed explanation-3: -The lytic cycle is one of two cycles that a virus can use to reproduce inside a host cell. The lytic cycle is a series of stages in which a virus hijacks a host cell, uses its components to manufacture more of the virus, destroys and exits the cell, and then goes on to infect other cells.

Detailed explanation-4: -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.

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