Multiple Choice
Which of the following is not an example of a protein that some viruses carry inside their capsid?
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17. Viruses
Viruses
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What is an advantage for a virus to enter the lysogenic cycle instead of the lytic cycle?
A
The virus can increase its mutation rate.
B
The virus can immediately destroy the host cell.
C
The virus can rapidly produce a large number of viral particles.
D
The virus can remain dormant and undetected within the host cell for extended periods.
Verified step by step guidance1
Understand the two viral replication cycles: the lytic cycle and the lysogenic cycle. The lytic cycle involves the virus taking over the host cell's machinery to produce new viral particles, leading to the destruction of the host cell. The lysogenic cycle involves the integration of the viral genome into the host cell's DNA, allowing the virus to remain dormant.
Recognize that in the lysogenic cycle, the viral DNA, known as a prophage when integrated into the host genome, is replicated along with the host cell's DNA during cell division. This allows the virus to persist in the host without causing immediate harm.
Consider the advantages of the lysogenic cycle for the virus. By remaining dormant, the virus can evade the host's immune system, as it does not produce viral particles that would trigger an immune response.
Understand that the lysogenic cycle allows the virus to spread to new host cells as the host organism grows and divides, without killing the host cells immediately. This can be advantageous in environments where host cells are scarce.
Conclude that the ability to remain dormant and undetected within the host cell for extended periods is a strategic advantage for the virus, allowing it to persist and spread without alerting the host's defenses.
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