Which of the following is a common trigger for the activation of a latent virus in a host cell?

• A. Increased oxygen concentration
• B. Exposure to ultraviolet (UV) light
• C. High levels of glucose
• D. Stable temperature conditions

Answer: (B)

Verified step by step guidance

1. Understand that a latent virus is one that remains dormant within a host cell without causing immediate symptoms or active infection.
2. Recall that certain environmental or physiological triggers can cause a latent virus to reactivate and enter the lytic cycle, leading to active viral replication.
3. Evaluate each option by considering whether it is known to cause stress or damage to the host cell's DNA or environment, which can trigger viral activation.
4. Recognize that exposure to ultraviolet (UV) light causes DNA damage and cellular stress, which is a well-documented trigger for the activation of latent viruses such as herpesviruses.
5. Conclude that increased oxygen concentration, high glucose levels, and stable temperature conditions are not commonly associated with triggering latent virus activation.