Multiple Choice
A prophage is a(n) __________.
17. Viruses
Viruses
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Why can flare-ups of herpesvirus infection recur throughout a person's life?
A
The herpesvirus becomes a prophage during the lysogenic cycle of the infection, so the viral genome is recombined with the host DNA.
B
Herpesvirus is very common in the environment, so it is easy for a person to become re-infected.
C
Herpesvirus may cloak itself in a cell's nuclear envelope, making it very difficult for the immune system to recognize it.
D
The herpesvirus always kills its host cell when it leaves. Cycles of cell death cause the recurring flare-ups.
E
Herpesvirus can leave its DNA behind as minichromosomes in nerve cell nuclei. Stress can trigger another round of virus production, producing characteristic blisters and sores.
Verified step by step guidance1
Understand the nature of herpesvirus infection: Herpesvirus can establish a latent infection, meaning it can remain dormant within the host cells for extended periods.
Learn about the lysogenic cycle: During this cycle, the viral DNA integrates into the host cell's genome, allowing the virus to persist without causing immediate harm.
Recognize the role of nerve cells: Herpesvirus DNA can exist as minichromosomes within nerve cell nuclei, allowing the virus to remain hidden from the immune system.
Identify triggers for reactivation: Stress or other factors can reactivate the virus, leading to the production of new viral particles and the appearance of symptoms like blisters and sores.
Understand the implications of reactivation: The ability of herpesvirus to reactivate and cause symptoms is why flare-ups can recur throughout a person's life.
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