19. Innate Immunity

How does the interferon response provide anti-viral protection?

If a cell produces antiviral proteins (AVPs) what occurs when that cell encounters dsRNA?

How does the interferon response to an invading virus result in the infected cell undergoing apoptosis?

Which of the following cells can induce viral-infected cells to undergo apoptosis?

Which of the following statements about interferon is incorrect?

a) It only works on a few specific types of virus.

b) It makes cells resistant to viral infection.

c) It is a species-specific molecule.

d) It does not directly inactivate viruses.

What are interferons? Discuss their roles in innate immunity.

Which of the following statements about IFN-α is false?

a. It interferes with viral replication.

b. It is host-cell–specific.

c. It is released by fibroblasts.

d. It is virus-specific.

e. It is released by lymphocytes.

The type of interferon present late in an infection is:

a. Alpha interferon

b. Beta interferon

c. Gamma interferon

d. Delta interferon

Interferons ____________.

a. Do not protect the cell that secretes them

b. Stimulate the activity of macrophages

c. Cause muscle aches, chills, and fever

d. All of the above

A human host can prevent a pathogen from getting enough iron by all of the following except

a. reducing dietary intake of iron.

b. binding iron with transferrin.

c. binding iron with hemoglobin.

d. binding iron with ferritin.

e. binding iron with siderophores.