The bacteriophage is adsorbed to the host cell at _ of the bacterium.

Explanation

The answer is "Receptor site." Explanation: Being obligate parasites, viruses require a receptor site on the host surface for attachment. The bacteriophage is adsorbed to the receptor site of the bacterium. A receptor site is a specific molecule on the surface of the bacterium that the bacteriophage can recognize and bind to. Once the bacteriophage has attached to the receptor site, it injects its DNA into the host cell. The DNA then takes over the host cell's machinery and starts to replicate itself. The replicated DNA then produces new bacteriophage particles, which are released from the host cell.