Question

Which of these is NOT a correct statement about pattern recognition receptors (PRRs)?

A) Each PRR can only bind a specific type of microorganism.
B) Toll-like receptors (TLRs) are a type of PRR.
C) PRRs bind molecules from invading microorganisms and cause protective responses.
D) PRRs are in the plasma membrane, endosome or phagosome, and cytoplasm of our body's cells.

Answer 1

Statement A is incorrect because PRRs are capable of recognizing molecules from a broad range of pathogens, not just a specific type. PRRs like Toll-like receptors (TLRs) bind to pathogen-associated molecular patterns (PAMPs) and initiate protective immune responses.

Step-by-step explanation:

The correct answer to the question is A) Each PRR can only bind a specific type of microorganism. This statement is not accurate about pattern recognition receptors (PRRs). PRRs, including Toll-like receptors (TLRs), are capable of recognizing molecules that are characteristic of broad classes of pathogens, not just specific types of microorganisms. These molecules are known as pathogen-associated molecular patterns (PAMPs). PRRs are found in locations such as the plasma membrane, endosome or phagosome, and cytoplasm, where they identify molecular signatures specific to pathogens and trigger a protective response from the immune system. Furthermore, the binding of PRRs with PAMPs can activate cytokine release, which plays a vital role in regulating the immune response.