Question 1
A pleural fluid specimen shows Gram-positive cocci in chains on direct smear. After 24 hours on sheep blood agar, colonies are small with a narrow zone of beta-hemolysis and are catalase-negative. Lancefield grouping is positive for Group A. Which organism is most likely?
Correct Answer:
Streptococcus pyogenes
Question 2
A wound swab grows Gram-positive cocci in clusters. The isolate is catalase-positive and coagulase-positive. Which identification is most likely?
Correct Answer:
Staphylococcus aureus
Question 3
An S. aureus isolate from a surgical wound is tested with a cefoxitin disk: a 19 mm zone is observed. Per current CLSI breakpoints, how should this be interpreted?
Correct Answer:
Resistant to methicillin (MRSA)
Question 4
Which confirmatory test phenotypically detects ESBL (extended-spectrum beta-lactamase) production in Enterobacterales?
Correct Answer:
Ceftazidime/cefotaxime MIC reduction ≥3 log2 dilutions with clavulanate
Question 5
A Klebsiella pneumoniae isolate is resistant to meropenem. Which test is the CLSI-recommended phenotypic method for carbapenemase detection?
Correct Answer:
Modified carbapenem inactivation method (mCIM) with or without EDTA-mCIM
Question 1
Exam overview

About this Exam

Prepare with the ABPath Medical Microbiology Practice Questions - ABPath Medical Microbiology Subspecialty Certification Examination Exam practice quiz. This question bank includes 100 questions covering patient, organism, positive, shows, and blood. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

More details

Additional Information

ABPath Medical Microbiology Practice Questions - ABPath Medical Microbiology Subspecialty Certification Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on patient, organism, positive, shows, and blood. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

Quiz information

Frequently Asked Questions

The complete question count is available after full access is unlocked.
No fixed duration is currently configured for this quiz.
Question explanations are included where they are available in the quiz content, helping you review the reasoning after answering.
Yes. You can retake the practice test again as you continue studying during your available access period.
After your access is confirmed, you can continue into the complete practice exam from this quiz flow.
Unless explicitly stated otherwise, this page provides independent practice material for study and exam preparation and is not the official examination itself.
Keep studying

Related Questions