what are viruses? how are they milultiply? why are antibiotics ineffective in case of viral diseases?
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Here's the answer of ur question
A virus is a small infectious agent that replicates only in the living cells of other organisms. They are mere non living particles in the air. But as soon as they enter the human body, they begin multiplying or replicating immediately.
Viruses are “intracellular obligate parasites,” think of them as tiny cellular parasites. The first step in virus replication is for the virus to “infect” a host cell. This process varies according to the type of virus but essentially the virus binds to the host cell membrane surface and “injects” its genetic material (DNA or RNA) into the cell.
Once the genetic material of the virus has entered the cell, it will "take over" the cellular machinery (ribosomes and enzymes) to replicate itself. Unlike bacteria and other cells which replicate by processes which yield two cells in each replicating cycle, the replication of viral DNA or RNA is explosive. It yields many hundreds of copies of the virus genetic material and other virus components such as capsule proteins and the proteins needed for mobility structures.
Antibiotics are useless against viral infections. This is because viruses are so simple that they use their host cells to perform their activities for them.
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A virus is a small infectious agent that replicates only in the living cells of other organisms. They are mere non living particles in the air. But as soon as they enter the human body, they begin multiplying or replicating immediately.
Viruses are “intracellular obligate parasites,” think of them as tiny cellular parasites. The first step in virus replication is for the virus to “infect” a host cell. This process varies according to the type of virus but essentially the virus binds to the host cell membrane surface and “injects” its genetic material (DNA or RNA) into the cell.
Once the genetic material of the virus has entered the cell, it will "take over" the cellular machinery (ribosomes and enzymes) to replicate itself. Unlike bacteria and other cells which replicate by processes which yield two cells in each replicating cycle, the replication of viral DNA or RNA is explosive. It yields many hundreds of copies of the virus genetic material and other virus components such as capsule proteins and the proteins needed for mobility structures.
Antibiotics are useless against viral infections. This is because viruses are so simple that they use their host cells to perform their activities for them.
plzzz mrk it as brainliest
hrik21:
plzzz mrk it as brainliest
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Viruses are those organisms which enter into the body of living organism n use the immune system of dat particular organism
Antibiotics dnt work against viral disease as antibiotics are used only to destroy the cell walls of certain organisms....as virus use our machinery fr their survival and as we dnt make any cell wall antibiotics dnt work against virus
Antibiotics dnt work against viral disease as antibiotics are used only to destroy the cell walls of certain organisms....as virus use our machinery fr their survival and as we dnt make any cell wall antibiotics dnt work against virus
Plzz mark brainliest
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