Parasitology: Protozoa Classification and Life Cycle

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48 Questions

Which insect is the vector for African trypanosomiasis?

Tsetse fly

What form of Leishmania causes the most severe visceral form of the disease?

Leishmania donovanii

What is the vector for American trypanosomiasis (Chagas' disease)?

Reduviid bug

Which parasite is responsible for causing malaria?

Plasmodium spp.

What is the primary mode of transmission for toxoplasmosis?

Ingestion of infected meat

Which insect is the vector for the transmission of Babesiosis?

Tick

What is the mode of transmission for Giardia lamblia?

Ingestion of contaminated water or food

Where is the site of infection for Entamoeba histolytica?

Intestine only

What is the diagnosis for Trichomonas vaginalis infection?

Wet mount of vaginal smear

Which organism causes granulomatous encephalitis and is less aggressive in nature?

Acanthamoeba culbertsoni

What is the mode of infection for Naegleria fowleri?

Infection of nasal passages

What is the mode of infection for Cryptosporidium parvum/hominis?

Ingestion of oocyst (water, food, swimming pool)

What is the motility type of Amoebae?

Pseudopodal motility

What is the mode of transmission for Giardia lamblia?

Contaminated water

Where is the site of infection for Trichomonas vaginalis?

Vagina and urethra

What is the diagnosis for Balantidium coli infection?

Cysts in feces

What is the mode of infection for Naegleria fowleri?

Infection of nasal passages

Which organism causes cyclosporiasis and is self-limiting in immunocompetent individuals?

Cyclospora cayetanensis

Which insect is the vector for the transmission of African trypanosomiasis?

Tsetse fly

Which form of Leishmania causes the dermal/cutaneous form of the disease?

Leishmania tropica

What is the vector for the transmission of American trypanosomiasis (Chagas' disease)?

Reduviid bug

Which organism causes toxoplasmosis?

Toxoplasma gondii

Which vector is associated with the transmission of babesiosis and Lyme disease?

Tick (Ixodes)

Which parasite causes malaria and has a life cycle involving sporozoites, merozoites, and gametocytes?

Plasmodium

Which type of motility is exhibited by Trichomonas vaginalis?

Flagellate motility

What is the mode of transmission for Giardia lamblia?

Contaminated water (food)

Which parasite causes amoebic meningoencephalitis and is more aggressive in nature?

Naegleria fowleri

Where does the infection of Isosporiasis-Cyclosporiasis-Cryptosporidiosis primarily occur?

Intestine only

What is the mode of infection for Giardia duodenalis?

Ingestion of cysts (outdoor water; spring)

Which parasite is associated with the diagnosis of cysts in feces and may become extraintestinal, causing conditions such as liver abscess?

Entamoeba histolytica

Which vector is associated with the transmission of Leishmania?

Phlebotomus sand fly

Which organism causes African trypanosomiasis (sleeping sickness)?

Trypanosoma gambiense

Which parasite causes Chagas' disease?

Trypanosoma cruzi

What is the mode of transmission for Babesiosis?

Tick bite

Which organism causes toxoplasmosis?

Toxoplasma gondii

What is the vector for the transmission of malaria?

Mosquito

Which type of motility is exhibited by Trichomonas vaginalis?

Flagellate motility

Where is the site of infection for Giardia duodenalis?

Intestine

What is the mode of transmission for Isosporiasis-Cyclosporiasis-Cryptosporidiosis?

Contaminated water or food

What is the diagnosis for Trichomonas vaginalis infection?

Wet mount of vaginal smear to show rapidly motile trophozoites

Which organism causes giardiasis?

Giardia intestinalis

Which organism causes balantidiasis?

Balantidium coli

What is the vector for the transmission of African trypanosomiasis?

Tsetse fly

Which form of Leishmania causes the most severe visceral form of the disease?

Leishmania donovanii

Which organism causes Chagas' disease?

Trypanosoma cruzi

Which vector is associated with the transmission of babesiosis and Lyme disease?

Ixodes tick

What is the mode of transmission for toxoplasmosis?

All of the above

Which organism causes malaria and has a life cycle involving sporozoites, merozoites, and gametocytes?

Plasmodium spp.

Learn about the classification of protozoa based on their motility and the typical fecal-oral life cycle involving encystment, excystation, and stages like cyst and trophozoite. Dr R F Adebiyi's teachings on the subject are covered in this quiz.

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