1. Which is TRUE of opportunistic infections? A. They are caused by obligate pat
ID: 3165775 • Letter: 1
Question
1. Which is TRUE of opportunistic infections?
A. They are caused by obligate pathogens
B. They can be caused by human microbiota
C. They are not dangerous
D. They are mostly exogenously acquired
E. Y. pestis is an example of an opportunistic pathogen
2. Which of the following is the causative agent of pharyngitis?
A. S. aureus
B. S. pyogenes
C. H. pylori
D. GBS
E. E. coli
3. Mucocilliary clearance is an example of a physical mechanism of innate immunity.
A. True
B. False
4. Which of the following is NOT a mechanism used by Salmonella for cellular invasion?
A. Transcytosis
B. Lateral propagation
C. Induced invasion
D. Type III secretion
E. Phagocytosis
5. E. coli uses a type III secretion system for invasion of phagocytes.
A. True
B. False
6. All of the following compromise immunity, except ___________.
A. Pregnancy
B. Antibiotics
C. Chemotherapy
D. Microbiota
E. Infection
7. Helicobacter pylori is the causative agent of gastric ulcers.
A. True
B. False
8. Which is an example of direct transmission?
A. Tick bite
B. Intrapartum GBS infection
C. Fecal-oral
D. Fomites
E. Iatrogenic
9. Which of the following viruses commonly causes respiratory tract infections?
A. Chickenpox
B. RSV
C. German measles
D. Smallpox
E. Rubeola
10. S. pneumoniae is the most common causative bacterial agent of bloodstream infections.
A. True
B. False
Explanation / Answer
Ans 1 : B) They can be caused by human microbiota
The opportunistic infections are the ones that are caused by the infectious pathogens taking advantage of the opportunities such as weakened gut , dusrupted altered human gut flora etc.
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