Mycobacterium Tuberculosis
- Previous year questions on Mycobacterium Tuberculosis for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Microbiology section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 29 live questions in Mycobacterium Tuberculosis.
- 1 of 29 questions carries a verified exam year: 2019.
- Microbiology is worth about 20 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 6 Sept 2026.
Q1.TB infection is due to deletion of which of the following genes?
- AATG5✓ Correct answer
- BBCL-2
- CPTEN
- DP-53
Q2.A 60-year-old man with a chronic cough, bloody sputum, and marked weight loss is diagnosed as having tuberculosis. A "serpentine-like" colonial morphology is noted on Lowenstein-Jensen agar. This latter finding is caused by which of the following factors?
- AA large "slimy" capsule
- BWax D
- CCoagulase
- DCord factor✓ Correct answer
Q3.A young male patient presented with UTI. On urine examination, pus cells were found but no organisms. Which method would be best for culture?
- AMc Coy culture✓ Correct answer
- BThayer Martin medium
- CL.J medium
- DLevinthal medium
Q4.Which of the following is the most likely cause in a case of granuloma with positive AFB?
- ACat scratch disease
- BTrench fever
- CLeprosy✓ Correct answer
- DSyphilis
Q5.Minimum number of mycobacteria required to be detected by AFB staining is (per ml):
- A15-20
- B150-200
- C10,000✓ Correct answer
- D1 Lac
Q6.Which of the following organism is identified by interferon
- AStaphylococcus
- BLeptospira
- CCampylobacter
- DTuberculosis✓ Correct answer
Q7.The most common way in which tuberculosis is acquired is via the
- ASkin
- BGastrointestinal tract
- CRespiratory tract✓ Correct answer
- DGenital tract
Q8.Selective agent for Mycobacteria in LJ medium is :
- AMethylene blue
- BMalachite green✓ Correct answer
- CMineral salt solution
- DGlycerol
Q9.Acid fastness of tubercle bacilli is
- APresence of mycolic acid
- BIntegrity of cell wall
- CBoth of the above✓ Correct answer
- DNone of the above
Q10.Culture medium for cultivation of mycobacterium is:
- ALudlam's medium
- BLoeffler's serum
- CThayer-Martin medium
- DLJ medium✓ Correct answer
Answer key
Q1: A. ATG5; Q2: D. Cord factor; Q3: A. Mc Coy culture; Q4: C. Leprosy; Q5: C. 10,000; Q6: D. Tuberculosis; Q7: C. Respiratory tract; Q8: B. Malachite green; Q9: C. Both of the above; Q10: D. LJ medium.
Other topics in Microbiology
- Principles of General Microbiology
- Cells and Organs of the Immune System
- Immune System: Organisation, Function and Response
- Hypersensitivity
- Disorders of Immunity
- Streptococci and Enterococci
- Staphylococci
- Corynebacterium, Listeria and Actinomyces
- Clostridium and Bacillus
- Non-Sporing Anaerobes
- Mycobacteria Other Than Tuberculosis
- Escherichia, Proteus and Klebsiella
- Shigella and Salmonella
- Vibrio and Campylobacterales
- Pseudomonas and Burkholderiales
- Haemophilus
- Yersinia, Brucella, Bartonella and Legionella
- Gram-Negative Cocci
- Rickettsia, Chlamydia and Mycoplasma
- Spirochetes
- Virus Structure and General Properties
- DNA Viruses
- Hepatitis
- HIV
- Myxoviruses and Rhabdoviruses
- Arboviruses and Picornaviruses
- Rubella, Coronaviruses, Prions, Rotavirus, Filovirus, Zika Virus and Nipah Virus
- Superficial and Systemic Fungal Infections
- Opportunistic Fungal Infections
- Principles of Parasitology
- Protozoa: Amoebae, Ciliates and Flagellates
- Protozoa: Sporozoa
- Helminths: Cestodes and Trematodes
- Helminths: Nematodes
- Applied Clinical Microbiology