They are like cockle burrs that "grab" hold of your clothing or a dog's coat. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own.
A virus does not need a crystal to reproduce, as they are not living organisms and do not have cellular machinery to perform reproduction. However, a virus does need a host cell to replicate and produce new virus particles.
A virus is an organism that can reproduce only inside a host cell. They hijack the cellular machinery of the host cell to replicate their genetic material and produce new virus particles.
There is no other living thing that requires a virus in order to reproduce.
Schizophrenia is not caused by a virus or bacteria--it does not and cannot "reproduce". Because it is not caused by a virus or bacteria, it is also not "contagious".
A virus needs a host cell to reproduce, so it enters a host cell(living cell e.g bacteria) and releases genatic materials which enslave the the cell and reproduce.
a Cell
Nothing reproduces inside a virus. It has to latch on the a host cell and insert its' DNA or RNA and then make the host cell reproduce virus particles.
Viruses cannot reproduce on their own. They must infect a host cell and hijack its machinery to replicate. This process ultimately leads to the production of new virus particles that can go on to infect other cells.
All viruses do that. That's what makes a virus a virus.
A virus cannot reinvent itself without the help of a 'hosts' living cell. Once the virus invades the living cell it takes over the mechanism of reproduction using the cells enzymes and other chemical to reproduce. Therefore a virus cannot reproduce independently. Once the host cell is compromised the virus is free to infect other cells in the living organism.
I believe its the saliva glands.
Virus