American Society of Microbiology ABMM Actual Free Exam Questions & Community Discussion
A research laboratory is investigating the mechanisms of antiviral drug resistance. They are studying a herpes simplex virus strain that has developed resistance to acyclovir. The MOST common mechanism of acyclovir resistance in HSV involves mutations in the gene encoding:
Correct Answer: C
Vote an answer
A clinical microbiology laboratory is performing antimicrobial susceptibility testing using the broth microdilution method. The minimum bactericidal concentration (MBC) is determined by:
Correct Answer: B
Vote an answer
A microbiology laboratory is performing antimicrobial susceptibility testing using Etest strips. The MIC value is determined by:
Correct Answer: D
Vote an answer
Metagenomic analysis of a bronchoalveolar lavage (BAL) sample from a patient with severe pneumonia reveals a complex microbial community with a high abundance of both bacterial and fungal sequences. This approach is particularly useful in identifying:
Correct Answer: A
Vote an answer
Which of the following bacterial genera inherently possesses D-alanyl-D-lactate peptide subunits in its peptidoglycan precursors, conferring natural, high-level resistance to vancomycin?
Correct Answer: C
Vote an answer
A research laboratory is investigating the mechanism of action of a novel antiviral compound that inhibits the replication of a specific RNA virus. They find that the compound binds directly to the viral RNA-dependent RNA polymerase, preventing its elongation activity. This mechanism is most similar to that of:
Correct Answer: B
Vote an answer
A patient with a history of chronic sinusitis develops a severe invasive fungal infection involving the nasal sinuses and extending into the orbit. Tissue biopsy reveals broad, aseptate hyphae with irregular branching.
The patient is diabetic and acidotic. The MOST likely causative organism belongs to the genus:
The patient is diabetic and acidotic. The MOST likely causative organism belongs to the genus:
Correct Answer: B
Vote an answer
A laboratory worker sustains a needlestick injury while handling a blood sample known to be positive for Hepatitis B surface antigen (HBsAg) and Hepatitis B e antigen (HBeAg). The worker has completed the HBV vaccination series and has a documented anti-HBs titer >10 mIU/mL one month ago. What is the recommended post-exposure prophylaxis?
Correct Answer: D
Vote an answer
A patient with a history of travel to South America presents with fever, lymphadenopathy, and hepatosplenomegaly. Peripheral blood smear reveals the presence of trypomastigotes. The MOST likely diagnosis is:
Correct Answer: A
Vote an answer
0
0
0
10