The easiest way to understand how viruses replicate is to study the life cycles of viruses called bacteriophages (bacteria eaters). Bacteriophages replicate by either a lytic cycle or a lysogenic cycle. The difference in these two cycles is that the cell dies at the end of the lytic cycle or the cell remains in the lysogenic cycle. The virus remains "hidden".
When a virus invades a living cell, it uses the cell's machinery to replicate itself. The virus takes over the cell's functions by hijacking its cellular processes, such as protein synthesis and replication, to produce more viruses. This ultimately leads to the destruction of the host cell.
The virus attaches to the outer cell wall,inserts its DNA. It takes the cells functions over and starts a viral factory.
The virus attaches to the host cell, it takes over the functions of the host cell, and it eventually destroys it. If there was no host cell, the virus would die.
A host cell for a virus is a cell that the virus can infect and hijack to replicate itself. The virus enters the host cell, takes over its machinery to produce more virus particles, and then spreads to infect other cells.
Once inside a cell, a virus's genetic material takes over of the cell's functions. It instructs the cell to produce the virus's proteins and genetic material. These proteins and genetic material then assemble into new viruses.
A virus the immediately takes over a cell's functions is an active virus. An active virus causes the host cell to make new viruses, destroying the host cell.
Yes. This is the reason that viruses infect cells. The virus injects its genetic material, either DNA or RNA, which then takes over the cell's activities and turns the cell into a virus factory, causing the cell to make new virus parts and assemble them. Eventually the cell ruptures and the new viruses are free to infect other cells.
Virus have no cells
Attachment: The virus attaches to the surface of the bacterial cell. Entry: The virus injects its genetic material into the bacterial cell. Replication: The viral genetic material replicates using the host's cellular machinery. Release: The newly formed virus particles are released from the bacterial cell to infect other cells.
Bacteria are living cells -- cell membrane and all that cell stuff. A virus doesn't own it's own cell; it invades a cell and takes over, using the host cell to make more viruses.
Viral genes encode proteins and enzymes that are necessary for the virus to infect host cells, replicate its genetic material, and produce new virus particles. These genes also help the virus evade the host immune response and manipulate host cell functions to favor virus replication.
No, a virus is not a cell and is not made of cells.