Parasitology: 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 · Parasitology

Sample item

What parasite may cause dysentery with flask-shaped colonic ulcers?

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

The answer and the reasoning

A. Entamoeba histolytica

Entamoeba histolytica invades colonic mucosa and can form flask-shaped ulcers, causing dysentery and occasionally liver abscess.

Option by option

  • A. Entamoeba histolytica (correct)

    Correct: E. histolytica causes invasive amoebic colitis.

  • B. Plasmodium falciparum

    P. falciparum causes severe malaria.

  • C. Toxoplasma gondii

    Toxoplasma can cause congenital or CNS infection.

  • D. Enterobius vermicularis

    Enterobius usually causes perianal itching.

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 A, Entamoeba histolytica. Entamoeba histolytica invades colonic mucosa and can form flask-shaped ulcers, causing dysentery and occasionally liver abscess.

Why is "Plasmodium falciparum" not the answer?

P. falciparum causes severe malaria.

Why is "Toxoplasma gondii" not the answer?

Toxoplasma can cause congenital or CNS infection.

Why is "Enterobius vermicularis" not the answer?

Enterobius usually causes perianal itching.

What concept does this question test?

It tests Parasitology in Microbiology. The correct option holds because: Correct: E. histolytica causes invasive amoebic colitis.

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 Parasitology?

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.