In Clinical Laboratory Science Bacteriology – Mycobacteria Questions and Answers Already Passed
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In Clinical Laboratory Science Bacteriology –
Institution
In Clinical Laboratory Science Bacteriology –
In Clinical Laboratory Science
Bacteriology – Mycobacteria Questions
and Answers Already Passed
What is the main feature used to differentiate Mycobacterium species in a clinical laboratory?
Acid-fastness
Colony shape and size
Gram stain reaction
Motility
Which medium is commonl...
In Clinical Laboratory Science
Bacteriology – Mycobacteria Questions
and Answers Already Passed
What is the main feature used to differentiate Mycobacterium species in a clinical laboratory?
✔✔Acid-fastness
Colony shape and size
Gram stain reaction
Motility
Which medium is commonly used to grow Mycobacterium species in the laboratory?
Blood agar
Chocolate agar
✔✔Lowenstein-Jensen medium
MacConkey agar
What does the term "acid-fast" refer to in the laboratory identification of Mycobacteria?
The ability to retain dye after treatment with acid alcohol
The ability to grow on acid media
1
,The ability to form spores in acidic conditions
The ability to resist being killed by acidic pH
Which is the most commonly used method to confirm the presence of Mycobacterium
tuberculosis in clinical samples?
✔✔Acid-fast bacilli (AFB) smear and culture
Polymerase chain reaction (PCR)
Blood culture
Lateral flow immunoassay
Which of the following is a common non-tuberculous Mycobacterium species found in clinical
specimens?
Mycobacterium bovis
Mycobacterium leprae
✔✔Mycobacterium avium complex
Mycobacterium tuberculosis
In the clinical laboratory, which of the following is a critical aspect of isolating Mycobacteria
from clinical specimens?
2
, ✔✔Incubating at 37°C in a CO2-enriched environment
Incubating at room temperature with exposure to UV light
Incubating in a deep freezer
Incubating at 45°C in an aerobic environment
What staining method is typically used to detect Mycobacterium tuberculosis in clinical sputum
samples?
✔✔Ziehl-Neelsen stain
Wright-Giemsa stain
Gram stain
Löffler's methylene blue stain
Which test is used in the clinical laboratory to assess Mycobacterium tuberculosis resistance to
rifampin?
✔✔GeneXpert MTB/RIF assay
Lowenstein-Jensen culture
Acid-fast staining
Molecular beacon assay
3
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