Microbiology questions for the MOHAP lab exam.
Microbiology in the MOHAP lab exam covers bacteria, fungi, parasites and viruses, with emphasis on specimen collection, staining, culture, identification and antimicrobial susceptibility testing. Candidates should know which media and tests to use for common pathogens and how to handle infectious material safely in a clinical laboratory.
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666
microbiology practice questions
- 16%
- of the exam
- 8
- subtopics
- Oct 2026
- updated
Inside this topic.
The subtopics our microbiology questions cover.
- Bacteriology
- Mycology
- Helminths
- Protozoa
- Virology
- Parasitology
- Identification
- Media
Key facts to remember.
High-yield microbiology points to revise before the exam.
- 1
Streptococcus pneumoniae is alpha-hemolytic, optochin sensitive and bile soluble, which distinguishes it from viridans streptococci.
- 2
Streptococcus pyogenes (group A) is beta-hemolytic and PYR positive, while Streptococcus agalactiae (group B) is CAMP test and hippurate positive.
- 3
On XLD or Hektoen agar, Salmonella typically produces colonies with black centers from hydrogen sulfide, while Shigella does not produce hydrogen sulfide.
- 4
Disk diffusion (Kirby-Bauer) testing uses Mueller-Hinton agar and an inoculum standardized to a 0.5 McFarland turbidity.
- 5
Candida albicans forms germ tubes when incubated in serum at 37°C for 2-3 hours, a rapid presumptive identification test.
Sample questions with answers.
10 practice questions for the MOHAP Medical Laboratory Technologist & Technician Licensing Exam - UAE (CBT) (Microbiology). Pick an answer to see if you're right, with a full explanation.
Question 1
Which of the following is a "Fastidious" organism that requires Chocolate Agar for growth because it cannot grow on standard Blood Agar?
Question 2
Hematuria caused by parasitic infection is most commonly associated with which organism?
Question 3
Which organism is non-spore forming, gram-positive, and club-shaped?
Question 4
A laboratory needs to differentiate Group A Streptococcus from Group B Streptococcus. Which test is most appropriate?
Question 5
A 25-year-old patient presents with fever and sore throat. Culture shows beta-hemolytic colonies that are bacitracin sensitive. Which organism is most likely?
Question 6
Which virus is transmitted primarily by blood and body fluids?
Question 7
Which virus lacks an envelope?
Question 8
Helicobacter pylori causes peptic ulcer by:
Question 9
Which parasite causes iron deficiency anemia due to chronic intestinal blood loss?
Question 10
Which parasite is identified by barrel-shaped eggs with bipolar plugs?
Other topics in this exam.
Questions, answered
Classify streptococci first by hemolysis on blood agar: alpha (partial, green), beta (complete, clear) or gamma (none). Then apply the key tests: bacitracin and PYR for group A, CAMP and hippurate for group B, and optochin and bile solubility for S. pneumoniae. Enterococci are separated by growth in 6.5% NaCl and a positive bile esculin test.
Understand disk diffusion and MIC methods, why inoculum density and media are standardized, and how results are categorized using published breakpoints such as those from CLSI or EUCAST. Know the common resistance mechanisms, including MRSA (mecA, detected with cefoxitin), ESBL-producing Enterobacterales and carbapenemase producers. Also know that reference quality control strains are used to check test performance.
Ready to practise microbiology?
All 666 microbiology questions, with explanations and a readiness score for this topic.