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

Responses

The host cell copies its own DNA during the lytic cycle.
The host cell copies its own DNA during the lytic 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.
The host cell is destroyed 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.
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1 answer

The main differences between the lysogenic and lytic cycles can be summarized as follows:

  1. Viral Replication: In the lytic cycle, the virus takes over the host cell's machinery to replicate itself and produce new viral proteins, leading to cell lysis (destruction) and release of new viruses. In contrast, the lysogenic cycle involves the integration of viral DNA into the host cell's genome, where it can be replicated along with the host's DNA without destroying the host cell immediately.

  2. Host Cell Fate: During the lytic cycle, the host cell is ultimately destroyed when new viruses are released. In the lysogenic cycle, the host cell remains alive and can continue to divide, passing on the viral DNA to daughter cells.

  3. Viral Protein Synthesis: In the lytic cycle, viral proteins are synthesized actively as part of the replication process. In the lysogenic cycle, viral proteins are not typically synthesized until the virus is triggered to enter the lytic cycle (e.g., due to environmental stress).

In summary: The host cell is destroyed during the lytic cycle, while it remains alive during the lysogenic cycle, where viral DNA can exist dormant within the host.