Answer to Question #261395 in Microbiology for Assignment

Question #261395

What are the differences between RNA and DNA viruses?

How the interferons are produced following a viral infection in a susceptible cell?

Difference between Persistence infection and Acute infection.

Which promoter initiates which life cycle (lysogenic & Lytic)? Mention both types of promoters and their characteristics.

CI has more binding capacity to the DNA than CRO- Justify the statement.

Expert's answer

DNA viruses are mostly double-stranded while RNA viruses are single-stranded. RNA mutation rate is higher than the DNA mutation rate. DNA replication takes place in the nucleus while RNA replication takes place in the cytoplasm. DNA viruses are stable while RNA viruses are unstable.

Interferon is secreted by cells in response to stimulation by a virus or other foreign substance, but it does not directly inhibit the virus's multiplication. Rather, it stimulates the infected cells and those nearby to produce proteins that prevent the virus from replicating within them.

In contrast to acute viral infections, persistent infections last for long periods, and occur when the primary infection is not cleared by the adaptive immune response. Varicella-zoster virus, measles virus, HIV-1, and human cytomegalovirus are examples of viruses that cause typical persistent infections

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