Virus fortune-telling virus _ virus algorithm

Pinyin of the virus: bìng dú.

Pinyin: b ng d ú.

Explanation of words: virus is a small and simple non-cellular organism, which contains only one kind of nucleic acid (DNA or RNA). It must be parasitic in living cells and reproduce through replication.

Virus is a cell-free life form, which consists of a long nucleic acid chain and a protein shell. Viruses do not have their own metabolic mechanism and enzyme system. So when the virus leaves the host cell, it becomes a chemical substance that has no life activity and cannot reproduce on its own. Once it enters the host cell, it can use the material and energy in the cell and the ability of replication, transcription and translation to produce a new generation of viruses like it according to the genetic information contained in its own nucleic acid.

Classification and application of viruses

Classification: Viruses are not only divided into plant viruses, animal viruses and bacterial viruses. Structurally, it is also divided into single-stranded RNA virus, double-stranded RNA virus, single-stranded DNA virus and double-stranded DNA virus. The life process of virus can be roughly divided into five steps: adsorption, injection (genetic material), synthesis (reverse transcription/integration into host cell DNA), assembly (using host cell to transcribe RNA and translate protein for reassembly) and release.

Application:

1, the inactivated virus is a vaccine.

2. As a carrier of genetic engineering

3. Induction of cell fusion in cell engineering (inactivation of virus)

Virus incubation period: The virus gene replicates with the replication of the host cell and does not express. At this time, the number of viruses in the cell does not increase significantly.