The lytic cycle is a process by which a virus infects a host cell, replicates itself, and ultimately causes the cell to burst, releasing new virus particles. It begins when the virus attaches to the host cell and injects its genetic material. The host cell then uses its machinery to produce viral components, which assemble into new viruses. Once enough new viruses are formed, they cause the host cell to lyse, or break open. This release allows the new viruses to infect other nearby cells, continuing the cycle. The lytic cycle is a key mechanism for viruses like bacteriophages and can lead to rapid spread of infection.