Select the correct statements regarding the receptors of the innate immune system I. They are included in the Toll family of rece…

Question

Select the correct statements regarding the receptors of the innate immune system:

I. They are included in the Toll family of receptors.

II. They include MHC complexes.

III. They recognize molecular patterns.

IV. They include scavenger receptors.

1. A. I, III, and IV (Correct answer)
2. B. I and III
3. C. III and IV
4. D. II and IV

Correct Answer

Option A — I, III, and IV

Detailed Solution & Explanation

The correct answer is I, III, and IV.

Key Points

• Innate immune receptors include Toll-like receptors (TLRs) = I, pattern recognition receptors (PRRs) that recognize PAMPs/DAMPs = III, and scavenger receptors = IV.
• MHC complexes (II) are part of the ADAPTIVE immune system, not innate.