|
A virus has no ribosomes, water molecules or cell membrane. It cannot build any proteins itself, so it is not a living thing, but it does contain a chromosome which it can inject into a living cell.
When a cell is infected, the virus's genes are taken into the cell's chromosome, where they begin to give out messages for making new viruses. The cell is turned into a factory for making copies of the virus. When it is full of viruses the cell bursts open, sending out millions of viruses to infect more cells.
See also Viral Diseases
|
|
|
Useful Links |

When it is full of viruses the cell bursts open, sending out millions of viruses to infect more cells.