ANATOMY

Detailed explanation-1: -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.

Detailed explanation-2: -Interferons (IFNs)-the body’s first line of antiviral defence-are cytokines that are secreted by host cells in response to virus infection.

Detailed explanation-3: -Reason: Interferons protect the non-infected cells from bacterial infection. Assertion is true but Reason is false.

Detailed explanation-4: -Virus Alert Interferons are secreted by infected cells to warn their neighbors, and once stimulated, cells of the immune system secrete interferons as part of their viral surveillance. Interferons are small proteins that bind to receptors on the cell surface.

Detailed explanation-5: -Interferons are antiviral proteins.