_____ 11) Interferons A) help protect the virus-infected cell from the effects o
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Question
_____ 11) Interferons
A) help protect the virus-infected cell from the effects of the pathogen.
B) help protect the virus-infected from further invasion by viruses.
C) stimulate the production of antiviral proteins in neighboring cells, halting protein synthesis.
D) stimulate the production of antiviral proteins that coat the surface of healthy cells and prevent the attachment of pathogenic viruses. E) produce no adverse effects in the body.
_____ 12) All of the following statements about interferon are true, EXCEPT
A) synthesis of interferon is induced by viral double-stranded RNA
B) Interferon induces synthesis of enzymes that inhibit protein synthesis
C) interferon prevents the viruses from fusing and entering neighboring cells
D) interferon can be produced by fibroblasts and T-cells
Explanation / Answer
11). B) help protect the virus-infected from further invasion by viruses.
Interferons (IFNs) are the cytokines released by lymphocytes, macrophages, other cells infected with viruses in response to pathogenic organisms such as viruses, tumor cells, bacteria etc. Interferons attack viruses and cancer cells, inhibit the viral replication and engulf them. Also, stimulate the production of antibodies from the B lymphocytes.
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