Bacteriology: practice question

A Microbiology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Microbiology · Bacteriology

Sample item

Which organism is associated with gas gangrene after traumatic wound contamination?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

D. Clostridium perfringens

Clostridium perfringens can produce alpha toxin and gas in devitalized tissue, causing rapidly progressive myonecrosis requiring urgent surgery.

Option by option

  • A. Haemophilus influenzae

    Hib causes respiratory infection.

  • B. Neisseria gonorrhoeae

    Gonococcus causes STI and arthritis.

  • C. Streptococcus pneumoniae

    Pneumococcus commonly causes pneumonia.

  • D. Clostridium perfringens (correct)

    Correct: clostridial myonecrosis is gas gangrene.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More Microbiology questions

Questions about this Microbiology question

What is the answer to this Microbiology question?

The best answer is D, Clostridium perfringens. Clostridium perfringens can produce alpha toxin and gas in devitalized tissue, causing rapidly progressive myonecrosis requiring urgent surgery.

Why is "Haemophilus influenzae" not the answer?

Hib causes respiratory infection.

Why is "Neisseria gonorrhoeae" not the answer?

Gonococcus causes STI and arthritis.

Why is "Streptococcus pneumoniae" not the answer?

Pneumococcus commonly causes pneumonia.

What concept does this question test?

It tests Bacteriology in Microbiology. The correct option holds because: Correct: clostridial myonecrosis is gas gangrene.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Bacteriology?

Make a one-line identity card for each organism: shape and stain, defining test, toxin, disease and drug. Then use the flashcards and the other Microbiology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.