Differentiate between the lysogenic and lytic cycles.(1 point)

Question

Responses

The host cell copies its own DNA during the lytic cycle.
The host cell copies its own DNA during the lytic cycle.

The virus injects DNA into the host cell during the lysogenic cycle.
The virus injects DNA into the host cell during the lysogenic cycle.

Viral proteins are synthesized during the lysogenic cycle.
Viral proteins are synthesized during the lysogenic cycle.

The host cell is destroyed during the lytic cycle.

Answer 1

The key difference between the lysogenic and lytic cycles lies in what happens to the host cell:

1. Lytic Cycle: The virus injects its DNA into the host cell, takes over the cell's machinery to replicate its own viral components, and ultimately causes the cell to lyse (burst), releasing new viral particles. In this cycle, the host cell is destroyed.

2. Lysogenic Cycle: The virus injects its DNA into the host cell, but instead of immediately reproducing, it integrates its DNA into the host cell's genome. The viral DNA (proviral DNA) is replicated along with the host cell's DNA when the cell divides, allowing the virus to remain dormant for extended periods without harming the host.

In summary, the destruction of the host cell occurs in the lytic cycle, while the viral DNA integrates into the host's genome and can be passed on to daughter cells in the lysogenic cycle.