Activity 1: Protozoan Parasites February 17, 2021 This activity has 25 MCQs. Please click NEXT to attempt the quiz. Q1. What is the habitat of this parasite in human? Duodenum and upper jejunum Caecum and colon Ileum and duodenum Colon and rectum Q2. This stage can be detected in human faecal specimens sputum specimens blood specimens urine specimens Q3. Give a diagnostic feature of this E. histolytica stage 4 nuclei Rounded chromatoid bodies Small, centrally located karyosome Large, eccentric karyosome Q4. What is the infective stage of Entamoeba histolytica to human? Trophozoite Precyst Cyst Metacyst Q5. This parasite stage can be detected in human faecal specimens blood specimens sputum specimens urine specimens Q6. All of the following are diagnostic features, except Spherical shape Chromatoid bodies are splinter-like with pointed ends 12 – 15 µm (range 10 - 20µm) in size Contains a centrally located small karyosome Q7. All of the following are true of this parasite, except Common non-pathogenic commensal of human Habitat in human is the Large intestines Detected in faecal specimens of infected human Has eight nuclei Q8. All of the following are diagnostic features of E. coli stage, except Live parasites show sluggish movements Size: 20 – 25 µm (range 15 to 50 µm) Large, centrally located karyosome No RBCs in cytoplasm; Bacteria, yeast, etc., present Q9. Give a diagnostic feature Has cilia Chromatoid bars are splinter-like Size: 35 – 55 µm Contains up to 4 nuclei Q10. Largest protozoan parasite and only ciliate that is pathogenic to human is Balantidium coli Entamoeba histolytica Entamoeba coli Giardia lamblia Q11. Which is a diagnostic feature? Shape: Irregular with finger-like pseudopodia Large kidney shaped macronucleus Diffused glycogen mass seen in immature stages Contains up to four micronuclei Q12. Identify Plasmodium vivax gametocyte Plasmodium vivax ring Plasmodium falciparum gametocyte Plasmodium falciparum schizont Q13. Give two diagnostic features Pear shaped and Bilaterally symmetrical Ventral surface is convex and dorsally concave Sucking disc on dorsal surface 02 nuclei and 08 pairs of flagella Q14. Identify the species and stage Entamoeba coli cyst Entamoeba histolytica trophozoite Balantidium coli cyst Giardia lamblia trophozoite Q15. Pick the pathogenic protozoans to human Entamoeba coli and Balantidium coli Entamoeba histolytica and Fasciolopsis buski Balantidium coli and Entamoeba histolytica Entamoeba coli and Fasciolopsis buski Q16. Identify the species and stage Plasmodium falciparum gametocyte Plasmodium falciparum ookinete Plasmodium vivax gametocyte Plasmodium vivax schizont Q17. Identify the stage Gametocyte Ring Schizont Oocyst Q18. Identify Trypanosoma brucei Leishmania species Cryptosporidium species Toxoplasma gondii Q19. Identify Trypanosoma brucei Leishmania species Cryptosporidium species Toxoplasma gondii Q20. Identify Trypanosoma brucei Leishmania species Cryptosporidium species Cryptosporidium species Q21. Identify Trypanosoma brucei Leishmania species Cryptosporidium species Toxoplasma gondii Q22. Identify Toxoplasma gondii unsporulated oocyst Toxoplasma gondii tachyzoites Toxoplasma gondii sporulated oocyst Toxoplasma gondii tissue cyst Q23. Identify the parasite Trypanosoma brucei Leishmania donovani Plasmodium falciparum Toxoplasma gondii Q24. Identify Giardia lamblia cyst Giardia lamblia trophozoite Entamoeba coli cyst Entamoeba coli trophozoite Q25. Identify and give the route of transmission to human Trichomonas vaginalis; Sexual transmission Giardia lamblia; Oral transmission Laishmania donovani; Blood transfusion Trypanosoma brucei; Tsetse fly 6 out of 5 Time is Up! Time's up
