4. Host Defense and Pathogens

Microbiome Interactions — Quiz

Test your understanding of microbiome interactions with 5 practice questions.

Practice Questions

Question 1

Secondary bile acids, derived from commensal metabolism of primary bile acids, promote colonic regulatory T cell differentiation by activating which receptor on naïve T cells?

Question 2

Low-level translocation of commensal lipopolysaccharide (LPS) into the circulation promotes steady-state granulopoiesis by signaling through which receptor on bone marrow stromal cells?

Question 3

Which enzyme expressed by intestinal dendritic cells converts vitamin A into retinoic acid, thereby promoting regulatory T cell differentiation?

Question 4

Which innate lymphoid cell subset requires microbial signals for its development and maintenance in the gut mucosa?

Question 5

Which cytosolic pattern recognition receptor detects γ-D-glutamyl-meso-diaminopimelic acid (iE-DAP) motifs from bacterial peptidoglycan, contributing to mucosal defense?