How does the interferon response provide anti-viral protection?

• A. Interferons bind to the virus neutralizing it.
• B. Interferons stimulate neighboring cells to produce anti-viral proteins.
• C. Interferons prevent the virus from entering the cell.
• D. Interferons prevent the virus from leaving the infected cell and infecting neighboring cells.

Answer: (B)

Verified step by step guidance

1. Understand the role of interferons: Interferons are proteins produced by host cells in response to viral infections. They play a crucial role in the immune response against viruses.
2. Identify the mechanism of action: Interferons do not directly neutralize viruses. Instead, they act as signaling molecules that alert neighboring cells to the presence of a virus.
3. Explore the signaling process: When interferons bind to receptors on neighboring cells, they trigger a signaling cascade that leads to the production of anti-viral proteins within those cells.
4. Examine the effect on neighboring cells: The anti-viral proteins produced by the neighboring cells help to inhibit viral replication and spread, providing a protective effect against the virus.
5. Clarify the misconception: Interferons do not prevent the virus from entering or leaving cells directly. Their primary function is to stimulate the production of anti-viral proteins in neighboring cells, enhancing the overall anti-viral response.