EVERYDAY SCIENCE

SCIENCE

VIRUS AND BACTERIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How does an active virus multiple?
A
Attaches it to a host, inject, dna tells the nucleus to do the wrong thing, the virus takes over, and then the host explodes.
B
Attaches it to a host, dna tells the nucleus to do the wrong thing, the virus takes over, and then the host explodes.
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it. During uncoating, replication, and assembly, the viral DNA or RNA incorporates itself into the host cell’s genetic material and induces it to replicate the viral genome.

Detailed explanation-2: -Attachment. A virus attaches to a specific receptor site on the host cell membrane through attachment proteins in the capsid or via glycoproteins embedded in the viral envelope. The specificity of this interaction determines the host-and the cells within the host-that can be infected by a particular virus.

Detailed explanation-3: -In order to reproduce, an infecting virion enters the cell and traverses through the cytoplasm toward the nucleus. Using the cell’s own nuclear import machinery, the viral genome then enters the nucleus through the nuclear pore complex.

Detailed explanation-4: -When a virus enters the body of the host, the virus begins to replicate with the help of the host cell machinery. The replication occurs due to biochemical and structural changes that lead to cell damage or complete destruction of the cell. The cells that are infected die through apoptosis or lysis.

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