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Differentiate between the lysogenic and lytic cycles.(1 point) Responses Viral proteins are synthesized during the lysogenic cycle. Viral proteins are synthesized during the lysogenic 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. The host cell is destroyed during the lytic cycle. The host cell is destroyed during the lytic cycle. The host cell copies its own DNA during the lytic cycle.

3 answers

The lysogenic and lytic cycles are two different life cycles of viruses, particularly bacteriophages, which illustrate how viruses replicate and interact with host cells.

  1. Lytic Cycle:

    • This cycle involves the immediate replication of the virus. After the virus injects its DNA or RNA into the host cell, it hijacks the host's cellular machinery to produce viral proteins and replicate its genome. Ultimately, this leads to the assembly of new virus particles, and the host cell is destroyed (lysed) as it releases these new virions.

  2. Lysogenic Cycle:

    • In this cycle, after the virus injects its genetic material into the host cell, it integrates its DNA into the host's genome, becoming a prophage. The viral DNA can remain dormant and be replicated alongside the host's DNA when the host divides. Under certain conditions (like stress to the host), the prophage can exit the genome and enter the lytic cycle, where it will begin to replicate and eventually lyse the host cell.

From your responses:

  • The statement "The host cell is destroyed during the lytic cycle" correctly describes one of the main differences; the lytic cycle ends with cell lysis, while the lysogenic cycle can allow the host cell to survive and replicate.
  • The other statements about the synthesis of viral proteins and DNA injection can apply to both cycles but in different contexts and outcomes.

In summary, the key difference is that the lytic cycle results in the destruction of the host cell, while the lysogenic cycle allows for the viral genome to persist in a dormant state within the host.

STUPID ROBOT. WHAT IS THE ANSWER?!

I apologize for any confusion. The clear differentiating statement is:

  • The host cell is destroyed during the lytic cycle.

This is the main distinction between the two cycles. In the lytic cycle, the virus replicates and causes the host cell to lyse (break apart), whereas in the lysogenic cycle, the viral DNA can integrate into the host DNA and the cell typically survives.