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Why are viruses not considered living things?

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Answered 2015-07-09 13:27:12

Viruses do not have all of the characteristics of living things. They consist of a protein coat which contains either DNA or RNA. They are not made of cells. They have no cellular structures. They do not require nutrients. They do not have metabolism. They do not grow or develop. They do not reproduce on their own. They must high-jack a living cell, inject it's genetic material, which then takes over the host cell which then becomes a virus factory. Eventually the cell becomes so full of replicated viruses that they burst, releasing the viruses so they can go on to attack other cells.
A virus is not considered a living thing because it can't live on its own and has to rely on another animals cells to reproduce. A living organism technically has to be able to survive and reproduce on their own without help from other organisms. They don't use their own energy to grow, make food, take food, or produce waste.
Viruses are not considered living organisms because they are not composed of cells (the Cellular Theory of Life). Also, viruses cannot replicate independently - they must infect a living cell before their structure and genetic material can be reproduced and multiplied.

However, there is a vigorous ongoing debate about whether or not viruses are living - they do have discrete genetic material that is transmitted from "parent" to "offspring", they can react to the environment by changing what proteins they are expressing and some viruses are extremely complex.
One of the main reasons viruses are considered non living is because they cannot replicate by themselves. In order to replicate they must find a host cell and inject DNA into the host cell which disrupts the host cell's normal processes by causing it to make copies of the virus instead of carrying out all its normal processes. Once the viruses have been created inside the host cell, the host cell bursts to release the viruses. This is the same reason it is considered parasitic, since it uses the host cell for its benefit and damages or kills the host cell in the process.

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Bacteria are considered to be living but viruses are not.


Viruses are not considered alive because they dont have many of the charaistics that scientists have with living things


Because they reproduce and spread


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Viruses have no metabolic processes and are therefore not considered living.


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As we all know that viruses is not considered as living things, So it do not need nutrition.


Living things metabolize. Viruses do not


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The kingdoms only apply to living things. Bacteria are considered living and viruses are considered non-living, they don't have the characteristics of a living organism.


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Surely viruses are living things!


Viruses are considered as a link between living organisms and non-living things because they contain nucleic acids (DNA & RNA) enveloped by a protein coat like living organisms also they have a crystalline form out of the living tissues like non-living things


living thing- cytoplasm non living things - chair but remember, viruses are considered as both living and non living things. so a virus is your answer for your question


because viruses act as dead things outside the body but when they enter any living being ,they adopt the working mechanism of that body . Also they have only their own RNA. THEY ARE ALSO VERY HABITAT SPECIFIC i.e they can live only at certain temperature and pressure levels.In order to be considered a living thing, a virus must be able to reproduce. Technically, viruses do not. They attach themselves to a cell, or a "host cell" and infect it. Viruses are not considered living.


They are not: viruses are indeed living things!


viruses is a non living particle that reproduce in living cell


Viruses are considered to be non-living things, and are capable of causing disease. The reason viruses are not considered living is because they lack many of the characteristics of life until they infect a host cell.


Unlike living things viruses don't have a metabolism, making them obligatory parasites (they can only reproduce if there's a host cell they can hijack). They also aren't a cell, which is considered by many to be the minimal organisational structure of living things.


Yes, all living things have one or more cells. (Note: viruses are not usually considered to be living things, only genetic parasites that depend on the cells of living things as their hosts).


Viruses need a host cell to reproduce. They are only considered living things in that they contain the same type of proteins as other living things. They carry on none of the other life processes.


viruses do not grow, and viruses do not respond to changes in their environment. Therefore, viruses are not living organisms. All living things reproduce, but Viruses need living cells to reproduce because Viruses cannot reproduce by themselves.


Neither, viruses are unique to themselves and don't belong to any classification of life. Viruses are not considered living things because they do not perform all the functions of life therefore they are considered organic particles.



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