Q11. Which protozoan parasite is responsible for causing babesiosis?
a) Babesia microti
b) Plasmodium falciparum
c) Trypanosoma cruzi
d) Toxoplasma gondii
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Correct Answer: a) Babesia microti
Explanation: Babesiosis is caused by the protozoan parasite Babesia microti. It is transmitted to humans through the bite of infected ticks, particularly Ixodes scapularis (deer ticks). The parasite infects red blood cells, leading to symptoms such as fever, chills, fatigue, muscle aches, and hemolytic anemia. Babesiosis can range from mild to severe, particularly in immunocompromised individuals.
Q12. Which protozoan parasite is associated with causing cyclosporiasis?
a) Cyclospora cayetanensis
b) Trypanosoma cruzi
c) Plasmodium vivax
d) Toxoplasma gondii
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Correct Answer: a) Cyclospora cayetanensis
Explanation: Cyclosporiasis is caused by the protozoan parasite Cyclospora cayetanensis. It primarily affects the gastrointestinal tract, leading to symptoms such as watery diarrhea, abdominal cramps, nausea, and fatigue. Transmission commonly occurs through ingestion of contaminated food or water containing oocysts of the parasite. Cyclosporiasis outbreaks are often associated with fresh produce.
Q13. Which protozoan parasite is responsible for causing amoebic liver abscess?
a) Giardia lamblia
b) Entamoeba histolytica
c) Plasmodium falciparum
d) Toxoplasma gondii
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Correct Answer: b) Entamoeba histolytica
Explanation: Amoebic liver abscess is caused by the protozoan parasite Entamoeba histolytica. It occurs when the parasite invades the liver tissue, forming abscesses. Transmission commonly occurs through ingestion of contaminated food or water containing cysts of the parasite. Symptoms of amoebic liver abscess may include fever, abdominal pain, hepatomegaly, and jaundice.
Q14. Which protozoan parasite is associated with causing balantidiasis?
a) Balantidium coli
b) Trypanosoma cruzi
c) Plasmodium vivax
d) Toxoplasma gondii
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Correct Answer: a) Balantidium coli
Explanation: Balantidiasis is caused by the protozoan parasite Balantidium coli. It primarily affects the large intestine (colon) of humans and other mammals. Transmission commonly occurs through ingestion of contaminated food or water containing cysts of the parasite. Symptoms of balantidiasis may include diarrhea, abdominal pain, nausea, and occasionally dysentery with bloody stools.
Q15. Which protozoan parasite is responsible for causing leishmaniasis?
a) Trypanosoma cruzi
b) Leishmania donovani
c) Plasmodium falciparum
d) Toxoplasma gondii
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Correct Answer: b) Leishmania donovani
Explanation: Leishmaniasis is caused by various species of the Leishmania parasite, with Leishmania donovani being one of the major causes of visceral leishmaniasis (kala-azar). It affects the internal organs, particularly the spleen, liver, and bone marrow. The disease is transmitted to humans through the bite of infected sandflies. Symptoms may include fever, weight loss, enlarged spleen and liver, and anemia.
Q16. Which protozoan parasite is associated with causing trichomoniasis, a sexually transmitted infection?
a) Trichomonas vaginalis
b) Trypanosoma cruzi
c) Plasmodium falciparum
d) Toxoplasma gondii
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Correct Answer: a) Trichomonas vaginalis
Explanation: Trichomoniasis is caused by the protozoan parasite Trichomonas vaginalis. It is a sexually transmitted infection (STI) commonly affecting the genital tract in both men and women. Transmission occurs through sexual contact with an infected individual. Symptoms of trichomoniasis may include vaginal discharge, genital itching, discomfort during urination or intercourse, and in men, urethral discharge or irritation.
Q17. Which protozoan parasite is responsible for causing leishmaniasis?
a) Trypanosoma cruzi
b) Leishmania donovani
c) Plasmodium falciparum
d) Toxoplasma gondii
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Correct Answer: b) Leishmania donovani
Explanation: Leishmaniasis is caused by various species of the Leishmania parasite, with Leishmania donovani being one of the major causes of visceral leishmaniasis (kala-azar). It affects the internal organs, particularly the spleen, liver, and bone marrow. The disease is transmitted to humans through the bite of infected sandflies. Symptoms may include fever, weight loss, enlarged spleen and liver, and anemia.
Q18. Which protozoan parasite is associated with causing trichomoniasis, a sexually transmitted infection?
a) Trichomonas vaginalis
b) Trypanosoma cruzi
c) Plasmodium falciparum
d) Toxoplasma gondii
Show Answer
Correct Answer: a) Trichomonas vaginalis
Explanation: Trichomoniasis is caused by the protozoan parasite Trichomonas vaginalis. It is a sexually transmitted infection (STI) commonly affecting the genital tract in both men and women. Transmission occurs through sexual contact with an infected individual. Symptoms of trichomoniasis may include vaginal discharge, genital itching, discomfort during urination or intercourse, and in men, urethral discharge or irritation.
Q19. Which protozoan parasite is responsible for causing leishmaniasis?
a) Trypanosoma cruzi
b) Leishmania donovani
c) Plasmodium falciparum
d) Toxoplasma gondii
Show Answer
Correct Answer: b) Leishmania donovani
Explanation: Leishmaniasis is caused by various species of the Leishmania parasite, with Leishmania donovani being one of the major causes of visceral leishmaniasis (kala-azar). It affects the internal organs, particularly the spleen, liver, and bone marrow. The disease is transmitted to humans through the bite of infected sandflies. Symptoms may include fever, weight loss, enlarged spleen and liver, and anemia.
Q20. Which protozoan parasite is associated with causing trichomoniasis, a sexually transmitted infection?
a) Trichomonas vaginalis
b) Trypanosoma cruzi
c) Plasmodium falciparum
d) Toxoplasma gondii
Show Answer
Correct Answer: a) Trichomonas vaginalis
Explanation: Trichomoniasis is caused by the protozoan parasite Trichomonas vaginalis. It is a sexually transmitted infection (STI) commonly affecting the genital tract in both men and women. Transmission occurs through sexual contact with an infected individual. Symptoms of trichomoniasis may include vaginal discharge, genital itching, discomfort during urination or intercourse, and in men, urethral discharge or irritation.