USMLE: Microbiology Exam
Questions with Correct Verified
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1. Cause of Chagas disease - ANS ✓Trypanosoma cruzi
2. Amoebic dysentery - ANS ✓Entamoeba histolytica
3. African sleeping sickness - ANS ✓Trypanosoma brucei
4. Protozoal diarrhea in campers and hikers - ANS ✓Giardia
5. Protozoa transmitted in raw meat or infected cat faeces - ANS
✓Toxoplasma
6. Protozoa transmitted by sandflies - ANS ✓Leishmania
7. Causes vaginitis - ANS ✓Trichomoniasis
8. Found in the stool of a patient who visited Mexico and presents
with bloody diarrhea - ANS ✓cysts of Entamoeba histolytica
9. Stage of malaria life cycle: looks like a diamond ring - ANS
✓trophozoite
USMLE: Microbiology
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USMLE
10. Stage of malaria life cycle: ruptures the cell host - ANS
✓merozoite
11. Stage of malaria life cycle: replicating intracellularly - ANS
✓early schizont
12. Stage of malaria life cycle: form injected from the
anopheles mosquito - ANS ✓sporozoite
13. Stage of malaria life cycle: banana-shaped - ANS
✓gametocyte
14. Mechanism responsible for recurrent fever in malaria -
ANS ✓cyclic rupture of rbcs
15. Most common helminth infection in the US - ANS
✓Enerobius vermicularis
16. Helminth infecting 1/4 of the world - ANS ✓Ascaris
lumbricoides
17. Snail host, "swimmer's itch" - ANS ✓Schistosoma
18. Most common predisposing factor to bladder cancer in 3rd
world countries - ANS ✓Schistosoma haematobium
USMLE: Microbiology
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USMLE
19. Contracted by eating undercooked fish and causes an
inflammation of the biliary tract - ANS ✓Clonorchis inensis
20. Hookwork - ANS ✓Ancylostoma, nacator
21. Giant roundworm - ANS ✓Ascaris
22. Contracted by eating undercooked crabmeat and causes
inflammation of the lung - ANS ✓Paragonimus
23. Pork tapework - ANS ✓Taenia solium
24. Adult patient from Mexico with new onset seizures and
brain calcifications - ANS ✓Taenia solium
25. Hematuria in patient from 3rd world country (especially
Egypt) - ANS ✓Schistosoma haematobium
26. Mediates adherence of bacteria to the surface of a cell -
ANS ✓pilus/pili
27. Protects against phagocytosis - ANS ✓capsule
28. Provides rigid support to bacterial cell and protects
against osmotic pressure differences - ANS ✓peptidoglycan
29. Space between the inner and outer cellular membranes in
Gram (-) bacteria - ANS ✓periplasm
USMLE: Microbiology
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