(i)What are interferons? Explain their role in providing immunity to a person.
(ii) Which category of innate immunity defence barrier can interferons be classified into?
(ii) Which category of innate immunity defence barrier can interferons be classified into?
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Solution and Explanation
(i)
Step 1: Interferons are proteins released by virus-infected cells.
Step 2: They inhibit viral replication in surrounding uninfected cells by activating antiviral enzymes, thus preventing the spread of infection.
Step 3: They also stimulate the immune cells such as natural killer cells and macrophages.
(ii)
Step 1: Interferons are classified under the physiological barriers of innate immunity.
Step 2: These barriers include antimicrobial substances produced in the body that inhibit the growth of pathogens.
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