Question

Which type of innate immunity is exhibited by interferons secreted by virus-infected cells to protect non-infected cells?

• A. Physical barriers
• B. Cytokine barriers
• C. Physiological barriers
• D. Cellular barriers

Hint:

Cytokine barriers, like interferons, help limit the spread of viral infections by activating antiviral responses in neighboring cells.

Answer 1

The Correct Option is B

Step 1: Understand Interferons.
Interferons are signaling proteins secreted by virus-infected cells. They act as a part of the body's innate immune response and help protect neighboring cells from being infected by activating antiviral proteins.
Step 2: Identify the type of immunity.
Interferons function by signaling other cells to enhance their defenses, making them part of the cytokine barrier. Cytokines are signaling molecules that play an essential role in immune responses, including antiviral defense.
Conclusion:
The correct answer is (2) Cytokine barriers.
Final Answer: \[ \boxed{\text{The correct answer is Cytokine barriers.}} \]