11. Interferons are an important part of the host defense against viral infectio

ID: 71179 • Letter: 1

Question

11. Interferons are an important part of the host defense against viral infections. Their principal mode of action is that

a. they trigger the synthesis of one or more cellular proteins that inhibit viral replication.

b. they are present in the serum of healthy individuals and act as viral surveillance factors.

c. they coat viral particles and block their attachment to cells.

d. they protect the death of a viral-infected cell.

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12. The form of genetic exchange by which donor DNA is introduced into a recipient bacterial cell by a bacterial virus is

a. transformation.

b. conjugation.

c. transduction.

d. transfection.

e. horizontal transfer.

11. a. they trigger the synthesis of one or more cellular proteins that inhibit viral replication.

12. c. transduction.

Explanation:-Transduction is the process by which DNA is transferred from one bacterium to another by a bacterial virus

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