Bacteriophages can be found everywhere bacteria exist, in soil, oceans, and the earth's crust.
Like other viruses, phages are simple organisms consisting of DNA or RNA and surrounded by a protein capsid.
Bacteriophage completes its life cycle within the host bacteria.
Bacteriophage during its reproduction attaches itself to a bacterium and infects the host cell.
During the first phase of reproduction, they take over the host cell and use the cell's resources to make new phages, causing lysis and killing the bacterium.