What is a virus

summary

Virus is a kind of bacteria that can infect people. After infection, people will get all kinds of diseases. So, what is virus? Let's talk about it.

What is a virus

First of all, virus is a kind of small, simple structure, contains only one kind of nucleic acid (DNA or RNA), must be parasitic in living cells and proliferate by replication.

Secondly, the virus is a non cellular life form, which is composed of a long nucleic acid chain and a protein shell. The virus does not have its own metabolic mechanism and enzyme system. Therefore, the virus leaves the host cell and becomes a chemical substance without any life activity or independent self reproduction.

Finally, once the virus enters our body, it will use the material and energy in the cells of our body to copy, translate and transcribe the virus, and produce a new generation of virus like it according to the genetic information contained in its own nucleic acid.

matters needing attention

Virus is an important reason for us to get sick. In peacetime, we should pay attention to prevention, mainly to prevent virus infection. At the same time, it is particularly important to strengthen physical exercise and improve physique.