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Viruses (biological)

Why is a virus not considered a living cell?

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2013-11-01 19:36:17
2013-11-01 19:36:17

Virus hijacks cell's biochemical machinery to replicate it's own dna, because it can't replicate on it's own and it doesn't have metabolism, thus vuruses are not considered to be living organisms.

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DNA is the fundamental living matter. A virus, considered to be a living matter consists of core of DNA. When this virus invades a Bacterial cell, it forms the Bacteriophase.DNA is the fundamental living matter. A virus, considered to be a living matter consists of core of DNA. When this virus invades a Bacterial cell, it forms the Bacteriophase.


viruses are those living organisms which live inside the host cell and reproduce but its free means outside the cell they cannot respire ,reproduce etc thats why we considered virus as non-living.


Both a living cell and a virus contain nucleic acid. The virus has a capsid, whereas a living cell does not.


They are not alive and should not be considered to be alive. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts.These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own. By definition of living organisms, they do not fit.


Be more specific? Viruses can be considered pathogens, but they are not considered living because they do not obey the cell theory.


A virus and a living cell have a few things in common. The first is that they are both living things, a virus is also a living organism. The second is that they both microscopic.


Since a virus is not classified as a living thing, they are the exception to the cell theory. The cell theory states that all living things are made of cells.


it eats the cells of that living cell


Viruses are not considered to be living organisms because they do not have the characteristics of living organisms. They must hijack the host cell and take over the hosts' cell DNA. They then direct the host DNA to make virus genetic material, assemble the virus parts and then burst out of the cell to infect more host cells.


it is that virus which is in the host living cell and parasitic to all living organisms


Virus are an exception because viruses are alive only until they are inside their host cell. They are considered to behave dead when outside the host cell. Here a tempararily living.


A virus is considered a parasite because it attaches to a cell and kills it.


Virus are not considered as living or dead.They do not have organells.


Since a virus can only replicate on a living cell, host cell, it wouldn't be able to reproduce.


A virus and a cell have to have matching "docking" proteins for the virus to invade. Otherwise the virus is blocked.


Because a living thing must be able to reproduce a virus doesn't rather it infects a cell and that cells reproduction system acts as the viruses way to reproduce


A virus does not have a metabolism. To reproduce, a virus takes control of a living cell, forcing the cell to make copies of the virus. All energy is provided by the cell.


Viruses are considered to be parasites because a virus will infect a living Cell and use it just like a parasite does.


No, and FYI, a virus isn't living either,and a cell attacted by a virus is called a host cell,


Virus cannot considered living. They lack cellular organization


Virus is a non-living organism whilst an animal cell is a living organism (unless it's dead).


it is called non living when it is present outside the host living cell and it is called living when it is present in the living cell


They have no metabolism, no cellular structure, and can not reproduce without a host cell. They are considered to straddle the line between "life" and "nonlife".


Living things exhibit the characteristics of moving, respiration, reproduction, growth, etc. A virus does not exhibit any of these things except reproduction, however it can only do this when inside a host cell. A virus cannot be considered either distinctly a living or nonliving organism. This is because while it does not full satisfy the definition of a living organism, it cannot be considered dead either because they replicate once they are within a living cell (a characteristic that is not possessed by dead organisms).


Viruses are not considered "alive" because they lack many of the properties that scientists associate with living organisms. Primarily, they lack the ability to reproduce without the aid of a host cell, and don't use the typical cell- division approach to replication.



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