Much like a cell, a virus is able to grow in numbers. It however does not do so by binary fission as a cell does, but rather by a process called viral replication.
viral replication is a process that involves six steps and these are attachment, penetration, uncoating, replication , assembly and release.
Attachment - virus attaches to a host cell membrane or cell wall.
penetration - virus breaches the cell membrane and enters the cell.
Uncoating & replication, - viral DNA or RNA is realesed from virus and incorporated into the host cell own genetic material and induces it to produce multiple copies of the virus DNA or RNA and other protein parts of the protein
Assembly & release - the virus parts are put together to form whole viruses and these are released from host cell either by budding through or rupturing host cell membrane
