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Viruses are dead (not active) and have function while outside the infected body, but the second they enter a body they become alive (active), that is why people consider them as a bridge between the living and non living.
But if your question is why it happen, I don't know.
One of the reasons they consider them dead (not active) outside the body is that they don't reproduce outside the body only when they enter our bodies that they start reproducing.

2006-12-31 03:53:19 · answer #1 · answered by Anonymous · 0 0

Several reasons:

Firstly, there is great debate amongst virologists (scientists who specialize in viruses) as to whether they can be considered alive. The only time they may be considered alive (by those who so consider them) is when they are actively replicating inside a host cell (that is the only time they are "animate"). After the virus has replicated and (usually) killed the cell, it is released as a "seed" from the cell. The "seed" (also called a "virion") is the inanimate form of the virus, which almost no virologist considers alive.

One favorite "trick" some people like to engage in is to ask one to define "life", then defend why fire would not be considered "life" in the traditional sense. Try it and have fun. Viruses and fire are simialr in many ways (except most viruses cannot burn you!)

Viruses are truly fascinating. There are more than 5800 different "Families", and of them, only about 100 can infect humans - all the rest have absolutely no effect upon us!

2006-12-31 04:07:13 · answer #2 · answered by Anonymous · 0 0

I tell my biology students that viruses are like living things in that viruses have proteins and nucleic acid. But most biologists do not consider viruses to be alive for several reasons:
- Viruses do not use energy.
- Viruses do not reproduce. The host cell makes new viruses using the information from the viral nucleic acid, but the host cell provides the energy and materials. The virus does nothing.
- Viruses are not made of cells. The cell theory states that all living things are made of cells.

You can tell that taxonomists do not consider viruses to be alive. In the six-kingdom system (Archaebacteria, Eubacteria, Protista, Fungi, Plantae, Animalia) -- no classification for viruses.

2006-12-31 04:02:19 · answer #3 · answered by ecolink 7 · 0 0

bcose when they enter into the body cells, they become alive ,otherwise they r inaminate
hence,viruses r a bridge between the living and non living world.

2006-12-31 04:14:17 · answer #4 · answered by Anonymous · 0 0

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2016-11-25 02:51:09 · answer #5 · answered by Anonymous · 0 0

first of all it is line between living and non living things because virus inside the body is act as living and outside the body it act as non livingand forms a shell on it's body if the outer atmosphere touches him it will die

so it's having a atmospheric sensor Ha ha ha ho hi

Just Joking!!!

2006-12-31 17:12:10 · answer #6 · answered by smart_shailendra 2 · 0 0

a virus can be described as a self-replicating chemical reaction. I have heard people say that a virus is somewhere between chemistry and biology. the answer for you may depend upon your concept of what it means to be alive.

2006-12-31 03:55:53 · answer #7 · answered by michaell 6 · 0 0

Wow! Thank you! Exactly what I was searching for. I looked for the answer on other websites but I couldn't find them.

2016-08-23 14:03:38 · answer #8 · answered by Anonymous · 0 0

Need more details

2016-08-08 22:47:34 · answer #9 · answered by Anonymous · 0 0

http://en.wikipedia.org/wiki/Viruses hope this can help you
Happy new Year

2006-12-31 03:49:55 · answer #10 · answered by James Chan 4 · 0 0

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