Describe the life cycle of a virus.

Attachment. A virus, for example a bacteriophage attaches to the surface receptor of the host bacterial cell.Penetration. The virus injects the viral DNA genome through the cell wall and the cell membrane and into the host cell through the tail sheath. The head and other components of the virus remain outside the host cell.Biosynthesis. The viral DNA replicates and new viral proteins are made. A type of enzyme called endonuclease are also made which degrade the chromosomes of the host cell.Maturation. Replication, Transcription and Translation to create new viruses.Lysis. The cell lysis (bursts) releasing the new viruses so they can infect more host cells.