Gram-Negative Cocci

Previous year questions on Gram-Negative Cocci 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.
50 live questions in Gram-Negative Cocci.
2 of 50 questions carry a verified exam year: 2018, 2019.
Microbiology is worth about 20 of 300 questions on the exam. See every subject’s weightage.
Question set last updated 5 Sept 2026.

Q1.The two pathogenic Neisseria species, N. meningitidis and N. gonorrhoeae, differ from the nonpathogenic Neisseria species in that
- AThe former are less resistant to certain antibiotics than the nonpathogenic species
- BThe pathogenic species are oxidase positive
- CThe pathogenic species grow well in enriched chocolate agar
- DThe pathogenic species do not grow well at room temperature
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Q2.A 25-years-old sexually active unmarried male presents with urethral discharge after unprotected sex with a sexual worker. Gram stain pic was given; what may be the possible organisms?
- ANeisseria
- BChlamydia
- CTrichomonas
- DUreaplasma
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Q3.About N. gonorrhoea, all are true except
- AMost common cause of urethritis in male
- BAll strains are highly susceptible to penicillin
- CWidespread auxotrophic strains cause disseminated gonococcal infection
- DFound exclusively in human beings
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Q4.The virulence factors of Neisseria gonorrhea include all of the following except:
- AOuter membrane proteins
- BIgA Protease
- CM-Proteins
- DPili
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Q5.A young male complains of burning sensation upon urination and a purulent urethral discharge. Gram stain of the specimen shows pus cells with Gram negative diplococci. What is not true about the organism?
- APili is a virulence factor
- BIntracellular obligate
- CShow twitching motility
- DIt is both catalase and oxidase positive
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Q6.Gonococcus resistant structure is
- AUrethra
- BTestis
- CFallopian Tube
- DAmpulla of cervix
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Q7.A patient with conjunctival infection, which led to corneal perforation, was positive for Gram-negative coccoid appearance on Gram stain. Further investigation showed small translucent colonies, which is oxidase positive. What could be the most probable causative organism?
- AMoraxella catarrhalis
- BNeisseria gonorrhoea
- CPseudomonas aeruginosa
- DAcinetobacter actinatus
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Q8.All are true about Neisseria gonorrhea EXCEPT
- AGram positive cocci
- BCauses stricture urethra
- CInvolves seminal vesicals and spreads to epididymis
- DDrug of choice is Ceftriaxone
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Q9.A 22-year old software engineer was brought in an unconscious state to the casualty. Clinical examination revealed features suggestive of shock, DIC and multisystem failure. CSF and petechial rashes yielded gram-negative diplococci, which subsequently grew on modified Thayer-Martin medium. This isolation is known to be associated with
- AWaterhouse-Friderichsen syndrome
- BFitz-Hugh-Curtis syndrome
- CJob's syndrome
- DToxic shock syndrome
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Q10.Which of the following literally means "flow of seed"
- AAnthrax
- BClostridia
- CGonorrhoea
- DProteus
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Answer key

Q1: D. The pathogenic species do not grow well at room temperature; Q2: A. Neisseria; Q3: B. All strains are highly susceptible to penicillin; Q4: C. M-Proteins; Q5: B. Intracellular obligate; Q6: B. Testis; Q7: B. Neisseria gonorrhoea; Q8: A. Gram positive cocci; Q9: A. Waterhouse-Friderichsen syndrome; Q10: C. Gonorrhoea.

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Gram-Negative Cocci

Answer key

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