Category B - full version without watermark 720x576 (check terms and conditions at The embed version with watermark is free of charge - Description: The bacteriophage settles down on the surface and injects its genetic material into the bacterial cell. Subsequently the bacterium is reprogrammed and put into service of the virus. The entire metabolism does not longer produce components for the bacterial cell but for the virus. These are assembled at the end of the reproductive cycle. The new viruses explode the cell and attack more bacteria.