Work Force 2008

Virus. Classification

by admin on 09/05/09 at 3:38 am

One of the strangest bodies in nature are the virus, Are so rare and strange, that it is very difficult to combat. Here and overview on what they are and what they are not viruses.

A virus is a biological organism that does not work by itself, but requires a host cell in order to be played, or at best, replicate. There is an extensive debate among biologists about whether or not they are living organisms. It seems strange that the doubt, the idea is that viruses are not cells, something that is considered almost a defining life. But they do have genes and DNA, and evolve by natural selection.

But then what is a virus? Some considered on the verge of life, which are not really living. That’s because a virus is a DNA chain or RNA wrapped in a protein called caused viral. To live and replicate a virus needs a cell invaded. Once the work, producing many copies of the invading virus.

Usually, the virus destroys the cells used to replicate, and that is why they are so harmful to living organisms that are infected by them. Not only have us humans viruses invaded us, but also to plants, fungi and all animals.
In the process of replication, viruses generate disease in humans. Some of them are the common cold, the flu, chicken pox, measles, hepatitis B, yellow fever, dengue, rabies, AIDS, and the list is almost as long as a strand of DNA.

For now the only way to fight viruses are vaccines produced immunity for a certain time. Sometimes there are viruses that can be combated with the same immune system of our body, if you need external. But there are others for which no cure.