Multiple Choice
In addition to peptidoglycan, which molecule(s) unique to bacteria would PRRs recognize?
21. The Immune System
Pattern Recognition Receptors (PRRs)
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______ on phagocytes bind to PAMPs on bacteria, triggering uptake & destruction of the bacterial pathogens?
A
PRRs.
B
PAMPs.
C
AMPs.
D
PMNs.
Verified step by step guidance1
Understand the context: The problem is about the immune response, specifically how phagocytes recognize and respond to bacterial pathogens.
Identify key terms: PRRs (Pattern Recognition Receptors), PAMPs (Pathogen-Associated Molecular Patterns), AMPs (Antimicrobial Peptides), and PMNs (Polymorphonuclear leukocytes).
Clarify the role of each term: PRRs are receptors on phagocytes that recognize PAMPs, which are molecular patterns found on pathogens. This recognition triggers the phagocyte to engulf and destroy the pathogen.
Eliminate incorrect options: AMPs are molecules that directly kill bacteria, not receptors. PMNs are a type of white blood cell, not a receptor.
Conclude with the correct answer: PRRs on phagocytes bind to PAMPs on bacteria, initiating the immune response.
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