medical parasitology mcqs with answers pdf

1. Trypanosoma cruzi causes which parasitic disease?
   • a) Malaria
   • b) Chagas disease
   • c) Leishmaniasis
   • d) Filariasis
   • Answer: b) Chagas disease
2. The primary mode of transmission for malaria is through:
   • a) Contaminated food and water
   • b) Direct contact with infected individuals
   • c) Vector (mosquito) bite
   • d) Airborne droplets
   • Answer: c) Vector (mosquito) bite
3. Fasciola hepatica is a parasitic worm that affects which organ in the human body?
   • a) Intestine
   • b) Liver
   • c) Lungs
   • d) Heart
   • Answer: b) Liver
4. Schistosomiasis is caused by which type of parasite?
   • a) Nematode
   • b) Cestode
   • c) Trematode
   • d) Protozoan
   • Answer: c) Trematode
5. The parasite responsible for causing skin ulcers through the bite of infected sandflies is:
   • a) Leishmania donovani
   • b) Plasmodium falciparum
   • c) Trypanosoma cruzi
   • d) Giardia lamblia
   • Answer: a) Leishmania donovani
6. The intermediate host for liver fluke infection is typically a:
   • a) Snail
   • b) Fish
   • c) Mosquito
   • d) Tick
   • Answer: a) Snail
7. The disease resulting from infection with the pork tapeworm (Taenia solium) is called:
   • a) Ascariasis
   • b) Trichinosis
   • c) Cysticercosis
   • d) Filariasis
   • Answer: c) Cysticercosis
8. Toxoplasmosis is commonly transmitted through:
   • a) Mosquito bites
   • b) Sexual contact
   • c) Ingestion of contaminated food or water
   • d) Airborne droplets
   • Answer: c) Ingestion of contaminated food or water
9. The vector for African sleeping sickness is the:
   • a) Mosquito
   • b) Tsetse fly
   • c) Sandfly
   • d) Flea
   • Answer: b) Tsetse fly
10. Ascaris lumbricoides is a parasitic worm that primarily affects the:
    • a) Liver
    • b) Intestine
    • c) Lungs
    • d) Bloodstream
    • Answer: b) Intestine
11. The eggs of which parasitic worm are commonly found in soil contaminated with human feces and can lead to ascariasis upon ingestion?
    • a) Enterobius vermicularis
    • b) Trichuris trichiura
    • c) Ascaris lumbricoides
    • d) Taenia saginata
    • Answer: c) Ascaris lumbricoides
12. The disease characterized by the swelling of body parts, known as elephantiasis, is caused by:
    • a) Schistosoma mansoni
    • b) Wuchereria bancrofti
    • c) Taenia solium
    • d) Giardia lamblia
    • Answer: b) Wuchereria bancrofti
13. The infectious stage of the malaria parasite that is transmitted to humans through mosquito bites is called:
    • a) Cyst
    • b) Sporozoite
    • c) Trophozoite
    • d) Larva
    • Answer: b) Sporozoite
14. The larvae of which parasitic nematode can penetrate the skin of humans, causing a condition known as cutaneous larva migrans?
    • a) Ancylostoma duodenale
    • b) Strongyloides stercoralis
    • c) Trichuris trichiura
    • d) Enterobius vermicularis
    • Answer: b) Strongyloides stercoralis
15. Lyme disease is primarily transmitted to humans through the bite of infected:
    • a) Mosquitoes
    • b) Fleas
    • c) Ticks
    • d) Lice
    • Answer: c) Ticks
16. The infectious stage of the Entamoeba histolytica parasite is known as:
    • a) Trophozoite
    • b) Cyst
    • c) Larva
    • d) Sporozoite
    • Answer: b) Cyst
17. Trichinosis is caused by the consumption of undercooked meat containing larvae of:
    • a) Taenia solium
    • b) Trichuris trichiura
    • c) Toxoplasma gondii
    • d) Trichinella spiralis
    • Answer: d) Trichinella spiralis
18. The vector for the transmission of Chikungunya virus is:
    • a) Mosquito
    • b) Flea
    • c) Tick
    • d) Sandfly
    • Answer: a) Mosquito
19. Cryptosporidiosis is often associated with the contamination of water by the oocysts of:
    • a) Giardia lamblia
    • b) Plasmodium falciparum
    • c) Cryptosporidium parvum
    • d) Toxoplasma gondii
    • Answer: c) Cryptosporidium parvum
20. The parasite responsible for causing River Blindness (onchocerciasis) is transmitted to humans through the bite of infected:
    • a) Mosquitoes
    • b) Blackflies
    • c) Ticks
    • d) Sandflies
    • Answer: b) Blackflies
21. Amebiasis is primarily caused by the protozoan parasite:
    • a) Giardia lamblia
    • b) Entamoeba histolytica
    • c) Plasmodium falciparum
    • d) Toxoplasma gondii
    • Answer: b) Entamoeba histolytica
22. The parasite responsible for causing Sleeping Sickness (African trypanosomiasis) is transmitted to humans through the bite of infected:
    • a) Mosquitoes
    • b) Tsetse flies
    • c) Sandflies
    • d) Lice
    • Answer: b

21. Which parasitic infection is caused by the ingestion of larval cysts found in undercooked or raw meat, particularly pork?

• a) Toxoplasmosis
• b) Trichinosis
• c) Giardiasis
• d) Leishmaniasis
• Answer: b) Trichinosis

22. The parasite responsible for causing African river blindness is transmitted by:

• a) Mosquitoes
• b) Tsetse flies
• c) Blackflies
• d) Sandflies
• Answer: c) Blackflies

23. Which protozoan parasite is responsible for causing “watery diarrhea” and is often associated with contaminated water sources?

• a) Cryptosporidium parvum
• b) Entamoeba histolytica
• c) Trichomonas vaginalis
• d) Plasmodium vivax
• Answer: a) Cryptosporidium parvum

24. The eggs of which parasitic worm can be found in soil and are a common cause of parasitic infections in children?

• a) Trichuris trichiura
• b) Ascaris lumbricoides
• c) Taenia saginata
• d) Strongyloides stercoralis
• Answer: a) Trichuris trichiura

25. Which parasitic infection is associated with the transmission of larvae through the skin from contaminated soil or water?

• a) Dracunculiasis
• b) Onchocerciasis
• c) Strongyloidiasis
• d) Loiasis
• Answer: c) Strongyloidiasis

26. The disease caused by the larval stage of Echinococcus granulosus is known as:

• a) Hydatid disease
• b) Cysticercosis
• c) Ascariasis
• d) Taeniasis
• Answer: a) Hydatid disease

27. Which parasitic infection is commonly transmitted through contaminated vegetables, fruits, and water, causing gastrointestinal symptoms?

• a) Giardiasis
• b) Amebiasis
• c) Trichinosis
• d) Taeniasis
• Answer: a) Giardiasis

28. The life cycle of the Plasmodium parasite involves transmission to humans through the bite of:

• a) Ticks
• b) Lice
• c) Fleas
• d) Anopheles mosquitoes
• Answer: d) Anopheles mosquitoes

29. Which parasitic infection is often associated with contaminated swimming pools and water parks, causing diarrhea and abdominal cramps?

• a) Cryptosporidiosis
• b) Trichomoniasis
• c) Schistosomiasis
• d) Amebiasis
• Answer: a) Cryptosporidiosis

30. The vector for the transmission of the parasite causing Chagas disease belongs to the genus:

• a) Aedes
• b) Triatoma
• c) Culex
• d) Simulium
• Answer: b) Triatoma

31. Which parasite causes a condition known as “swimmers’ itch” when larvae penetrate the skin during contact with contaminated water?

• a) Trichinella spiralis
• b) Schistosoma mansoni
• c) Cercariae
• d) Strongyloides stercoralis
• Answer: c) Cercariae

32. The parasite responsible for causing visceral leishmaniasis primarily affects which organs in the human body?

• a) Liver and gallbladder
• b) Kidneys and bladder
• c) Spleen and bone marrow
• d) Lungs and bronchi
• Answer: c) Spleen and bone marrow

33. Which parasitic infection is characterized by the presence of adult worms residing in the lymphatic vessels, causing swelling and inflammation?

• a) Onchocerciasis
• b) Lymphatic filariasis
• c) Loiasis
• d) Dracunculiasis
• Answer: b) Lymphatic filariasis

34. The intermediate host for the transmission of the Schistosoma parasite is commonly:

• a) Snail
• b) Fish
• c) Crab
• d) Mosquito
• Answer: a) Snail

35. Which parasitic infection is transmitted through the bite of infected blackflies and can lead to river blindness?

• a) Malaria
• b) Onchocerciasis
• c) African sleeping sickness
• d) Leishmaniasis
• Answer: b) Onchocerciasis

36. The larval form of which parasitic worm can penetrate human skin, causing a condition known as “swimmer’s itch”?

• a) Trichinella spiralis
• b) Schistosoma mansoni
• c) Cercariae
• d) Wuchereria bancrofti
• Answer: c) Cercariae

37. Which parasitic infection is commonly known as “beaver fever” and is transmitted through contaminated water sources?

• a) Cryptosporidiosis
• b) Trichomoniasis
• c) Giardiasis
• d) Leishmaniasis
• Answer: c) Giardiasis

38. The parasite responsible for causing trichomoniasis primarily infects which part of the human body?

• a) Intestines
• b) Genital and urinary tract
• c) Bloodstream
• d) Liver
• Answer: b) Genital and urinary tract

39. Which protozoan parasite is associated with contaminated cat feces and can cause severe complications in pregnant women?

• a) Entamoeba histolytica
• b) Trichomonas vaginalis
• c) Toxoplasma gondii
• d) Cryptosporidium parvum
• Answer: c) Toxoplasma gondii

40. The intermediate host for the transmission of the Schistosoma parasite is typically:

• a) Snail
• b) Fish
• c) Mosquito
• d) Crab
• Answer: b) Fish

Here’s the video of parasitology questions and answers

• which of the following is not a parasite. a. E.coli. b. malaria c. Echinococus
• which of the following is a parasite. a. staphylococcus b. HiV c. Hook Worm