Free Parasitology MCQs with Answers
33 Parasitology MCQs from Microbiology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Last updated
33 questions · page 1 of 2
- A. Giardia lambia
- B. Ascaris lumbriocoides
- C. Strongyloides
- D. Entamoeba
Explanation: Strongyloides larvae usually enter through the skin from contaminated soil, rather than being acquired by the faeco-oral route.
Correct answer: Strongyloides- A. Indirect hemagglutination
- B. ELISA
- C. Counter immune electroporesis
- D. Microscopy
Explanation: ELISA detects antibodies against Entamoeba histolytica and is useful in invasive disease, where stool microscopy may be negative.
Correct answer: ELISA- A. Plasmodium vivax
- B. Plasmodium falciparum
- C. Leishmania donovani
- D. Microfilaria
Explanation: Blackwater fever is severe intravascular haemolysis classically associated with Plasmodium falciparum, often after repeated infection or…
Correct answer: Plasmodium falciparum- A. Plasmodium ovaie
- B. Leishman donovani
- C. Entamoeba histolytica
- D. Toxoplasma
Explanation: Kala-azar, or visceral leishmaniasis, is caused by the Leishmania donovani complex.
Correct answer: Leishman donovani- A. coli
- B. nana
- C. gingivalis
- D. histolytica
Explanation: Entamoeba gingivalis lives in the oral cavity, especially around the gums and teeth, rather than in the large intestine. E.
Correct answer: gingivalis- A. Cysts are 8 nucleated
- B. Cysts are 4 nucleated
- C. Trophozoites colonise in the colon
- D. The chromatid bodies are stained by iodides
Explanation: A mature Entamoeba histolytica cyst has four nuclei, not eight, so an eight-nucleated cyst is the exception.
Correct answer: Cysts are 8 nucleated- A. Glycogen mass
- B. Chromatid bars
- C. Eccentric nucleus
- D. Refractile nucleus
Explanation: E. histolytica cysts may contain a glycogen mass, chromatoid bars and nuclei with visible nuclear structures.
Correct answer: Refractile nucleus- A. Dot
- B. Comma
- C. Banana
- D. Sickle
Explanation: Plasmodium falciparum sporozoites are slender and sickle-shaped, which accounts for the option “sickle.” The banana shape is classically…
Correct answer: Sickle- A. cats
- B. Dogs
- C. Rats
- D. Cow
Explanation: Cats are the definitive hosts of Toxoplasma gondii, in which the parasite undergoes sexual reproduction and oocysts are shed in faeces.
Correct answer: cats- A. T. Solium
- B. T. Saginata
- C. Hook worm
- D. A. Lumbricoides
Explanation: Taenia saginata, the beef tapeworm, is generally longer than Taenia solium and the intestinal nematodes listed. Adult T.
Correct answer: T. Saginata- A. Enterobius
- B. Ancylostoma
- C. Ascaris
- D. Necator
Explanation: The threadworm or pinworm is Enterobius vermicularis. Hookworm, Ascaris and Necator are different intestinal nematodes with distinct…
Correct answer: Enterobius- A. Hook worm
- B. Thread worm
- C. Ascaris
- D. Guinea worm
Explanation: Hookworms cause chronic blood loss by attaching to the intestinal mucosa, making them a major cause of iron-deficiency anaemia in tropical…
Correct answer: Hook worm- A. Ascariasis
- B. Tapeworm
- C. Hood worm
- D. Ascariasis and tapeworm
Explanation: A tangled mass of Ascaris worms can produce a medusa-lock appearance on contrast X-ray.
Correct answer: Ascariasis- A. Caecum and large intestine
- B. Duodenum
- C. Stomach
- D. Jejunum and Ileum
Explanation: Entamoeba histolytica most often produces amoebic colitis in the caecum and ascending colon, although lesions can extend throughout the…
Correct answer: Caecum and large intestine- A. Giardia lambella
- B. Isopora belli
- C. Balantidium coli
- D. Taenia solium
Explanation: Taenia solium can cause internal autoinfection when eggs released from the adult worm are swallowed and develop into cysticerci, including…
Correct answer: Taenia solium- A. Hemolysis
- B. Malabsorption
- C. Spleen sequestration
- D. Bone marrow depression
Explanation: Falciparum malaria causes anaemia through destruction of infected and uninfected red cells, splenic sequestration, and suppression of…
Correct answer: Malabsorption- A. Trench fever
- B. Relapsing fever
- C. Q fever
- D. Epidemic typhus
Explanation: Lice transmit epidemic typhus, louse-borne relapsing fever, and trench fever.
Correct answer: Q fever- A. Sporozoite
- B. Gametocyte
- C. Merozoite
- D. Zygote
Explanation: The mosquito becomes infected when it ingests mature Plasmodium gametocytes from human blood.
Correct answer: Gametocyte- A. Salmonella
- B. Camphylobacter jejuni
- C. histolytica
- D. Y. enterocolitica
Explanation: Humans are the only important reservoir for Entamoeba histolytica, which spreads by ingestion of cysts from contaminated food or water.
Correct answer: histolytica- A. Plasmodium vivax
- B. Plasmodium malaria
- C. Plasmodium falciparum
- D. Plasmodium ovaleConsult Online Doctors
Explanation: Crescent or banana-shaped gametocytes are characteristic of Plasmodium falciparum, and its malaria pigment is dark brown to black.
Correct answer: Plasmodium falciparumParasitology MCQs: common questions
Are these Parasitology MCQs free?
Yes. All Parasitology MCQs from Microbiology are free on TestUstad, with unlimited attempts and no account needed. Nothing on this page is a sample or a trial.
How many Parasitology MCQs are on this page?
There are 33 Parasitology MCQs in the Microbiology bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Parasitology MCQ have an explanation?
Yes. Each Parasitology question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
Can I take a timed Parasitology test?
Yes. The practice button on this page starts a free Parasitology test drawn from the Microbiology bank. It marks each answer instantly, gives you a score at the end, and can be retaken as many times as you like.