NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Viruses use the ____ cycles to replicate
A
Lytic
B
Lysogenic
C
Lysosomal
D
Lytisenic
E
Mitotic
Explanation: 

Detailed explanation-1: -The lysogenic cycle, or non-virulent infection, involves the virus assimilating its genome with the host cell’s genome to achieve replication without killing the host. Figure 1. Example structure of a bacteriophage. In order to reproduce, phage must first enter the host cell.

Detailed explanation-2: -An example of a virus that uses the lysogenic cycle to its advantage is the Herpes Simplex Virus. After first entering the lytic cycle and infecting a human host, it enters the lysogenic cycle. This allows it to travel to the nervous system’s sensory neurons and remain undetected for long periods of time.

Detailed explanation-3: -There are two processes used by viruses to replicate: the lytic cycle and lysogenic cycle. Some viruses reproduce using both methods, while others only use the lytic cycle.

Detailed explanation-4: -The lytic cycle involves the reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell. The lysogenic cycle involves the incorporation of the viral genome into the host cell genome, infecting it from within.

Detailed explanation-5: -During the lysogenic cycle, the virus genome is reversibly integrated into the host chromosomes or replicates as a plasmid (or episome) in such a way that it does not lead to virus progeny production.

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