Final answer:
The bacterial viruses that are released by extrusion are called filamentous phages. They undergo a lysogenic cycle and can enter the lytic cycle under certain conditions.
Step-by-step explanation:
The bacterial viruses that are released by a process termed extrusion are called filamentous phages. These phages undergo a lysogenic cycle, in which the viral DNA is incorporated into the host genome and passed on to subsequent generations. Environmental stressors can cause the prophage to excise and enter the lytic cycle, where new virions are produced and released from the host cell.