MCQ Microbiology
MCQ Respiratory System Infections
1. Which of the following is not directly connected to the nasopharynx?
a) middle ear
b) oropharynx
c) lacrimal glands
d) nasal cavity
2. What type of cells produce the mucus for the mucous membranes?
a) goblet cells
b) macrophages
c) phagocytes
d) ciliated epithelial cells
3. Which of these correctly orders the structures through which air passes during inhalation?
a) pharynx → trachea → larynx → bronchi
b) pharynx → larynx → trachea → bronchi
c) larynx → pharynx → bronchi → trachea
d) larynx → pharynx → trachea → bronchi
4. The ___________ separates the upper and lower respiratory tract.
a) bronchi
b) larynx
c) epiglottis
d) palatine tonsil
5. Which microbial virulence factor is most important for attachment to host respiratory tissues?
a) adhesins
b) lipopolysaccharide
c) hyaluronidase
d) capsules
6. Which of the following does not involve a bacterial exotoxin?
a) diphtheria
b) whooping cough
c) scarlet fever
d) Q fever
7. What disease is caused by Coxiella burnetii?
a) Q fever
b) tuberculosis
c) diphtheria
d) walking pneumonia
8. In which stage of pertussis is the characteristic whooping sound made?
a) convalescence
b) catarrhal
c) paroxysmal
d) prodromal
9. What is the causative agent of Q fever?
a) Coxiella burnetii
b) Chlamydophila psittaci
c) Mycoplasma pneumoniae
d) Streptococcus pyogenes
10. Which of these microbes causes “walking pneumonia”?
a) Klebsiella pneumoniae
b) Streptococcus pneumoniae
c) Mycoplasma pneumoniae
d) Chlamydophila pneumoniae
11. Which of the following viruses is not commonly associated with the common cold?
a) coronavirus
b) adenovirus
c) rhinovirus
d) varicella-zoster virus
12. Which of the following viral diseases has been eliminated from the general population worldwide?
a) smallpox
b) measles
c) German measles
d) influenza
13. What term refers to multinucleated cells that form when many host cells fuse together during infections?
a) Ghon elements
b) Reye syndrome
c) Koplik’s spots
d) syncytia
14. Which of the following diseases is not associated with coronavirus infections?
a) Middle East respiratory syndrome
b) German measles
c) the common cold
d) severe acute respiratory syndrome
15. Which of these viruses is responsible for causing shingles?
a) rubella virus
b) measles virus
c) varicella-zoster virus
d) variola major virus
16. Which of these infections is also referred to as Valley fever?
a) histoplasmosis
b) coccidioidomycosis
c) blastomycosis
d) aspergillosis
17. Which of the following is not caused by a dimorphic fungus?
a) histoplasmosis
b) coccidioidomycosis
c) blastomycosis
d) aspergillosis
18. Which of the following is caused by infections by bread molds?
a) mucormycosis
b) coccidioidomycosis
c) cryptococcosis
d) Pneumocystis pneumonia
19. In the United States, most histoplasmosis cases occur
a) in the Pacific northwest.
b) in the desert southwest.
c) in the Mississippi river valley.
d) in Colorado river valley.
20. Which of the following infections can be diagnosed using a skin test similar to the tuberculin test?
a) histoplasmosis
b) cryptococcosis
c) blastomycosis
d) aspergillosis
