Page 241 - Clinical Immunology_ Principles and Practice ( PDFDrive )

CHaPter 14 The Microbiota in Immunity and Inflammation 219.e1

MUL t IPL e -CHOIC e QU e S t IO n S

1. The ability of microbes to stably colonize a certain barrier C. Pathobiont
tissue is directly influenced by all of the following except: D. Enteric pathogen
A. Environmental factors, such as pH, oxygen tension, and 3. Puberty has a profound impact on the microbiota of:
nutrient supply A. Skin
B. The musculature of the underlying tissue B. The large intestine
C. The presence or absence of other microbes in that locale C. The small intestine
D. The immune pathways that get activated following D. Lungs
colonization
4. All gnotobiotic organisms are also germ-free.
2. Microbe X can be detected in the fecal material of 40% of
healthy, immune competent laboratory mice. When pure A. True
isolates of microbe X are transplanted into mice with a deletion B. False
in gene Y, or into healthy or germ-free mice on a specific diet,
the mice develop inflammatory lesions in the intestines and
the liver. The most appropriate characterization of microbe
X is:
A. Parasite
B. Commensal