Chapter Exam

Chapter 8: Medical Parasitology — Online MCQ Test

Q: Which protozoan parasite causes amoebic dysentery?

Answer: A. Entamoeba histolytica — Entamoeba histolytica is the causative agent of amoebiasis, which can lead to amoebic dysentery. It commonly infects the large intestine.

Q: The vector for malarial parasite is the female ____ mosquito.

Answer: C. Anopheles — Female Anopheles mosquito transmits Plasmodium species and is the vector for malaria. Only the female mosquito takes blood meals.

Q: A person infected with Plasmodium usually shows fever at regular intervals due to ____.

Answer: A. Rupture of RBCs releasing parasites — The periodic fever in malaria occurs when infected red blood cells burst and release merozoites and toxins into the bloodstream. This causes chills and fever episodes.

Q: Which of the following is NOT a preventive measure for intestinal protozoan infections?

Answer: C. Eating uncovered food from roadside — Eating uncovered food from roadside increases the risk of ingesting parasite cysts and contaminated material. The other options help prevent infection.

Q: The best control strategy for vector-borne parasitic diseases is to ____.

Answer: B. Eliminate the vector and interrupt transmission — Control of vector-borne diseases like malaria and filariasis depends on reducing or eliminating the vector and breaking the transmission cycle. Treatment alone may not stop spread in the community.

MICROBIOLOGY · CLASS 12th · Tamil Nadu State Board

Practice Chapter 8: Medical Parasitology with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 12th MICROBIOLOGY. This chapter covers: Focusing on eukaryotic human parasites this chapter explores pathogenic protozoa and helminths. It covers parasite lifecycles host-vector interactions disease transmission clinical.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 8: Medical Parasitology — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 12th MICROBIOLOGY — Chapter 8: Medical Parasitology, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which protozoan parasite causes amoebic dysentery?

A. Entamoeba histolytica ✓
B. Plasmodium vivax
C. Giardia lamblia
D. Trypanosoma gambiense

Answer: A. Entamoeba histolytica
Entamoeba histolytica is the causative agent of amoebiasis, which can lead to amoebic dysentery. It commonly infects the large intestine.

The vector for malarial parasite is the female ____ mosquito.

A. Culex
B. Aedes
C. Anopheles ✓
D. House fly

Answer: C. Anopheles
Female Anopheles mosquito transmits Plasmodium species and is the vector for malaria. Only the female mosquito takes blood meals.

A person infected with Plasmodium usually shows fever at regular intervals due to ____.

A. Rupture of RBCs releasing parasites ✓
B. Damage to liver only
C. Formation of cysts in intestine
D. Blockage of lymph vessels

Answer: A. Rupture of RBCs releasing parasites
The periodic fever in malaria occurs when infected red blood cells burst and release merozoites and toxins into the bloodstream. This causes chills and fever episodes.

Which of the following is NOT a preventive measure for intestinal protozoan infections?

A. Drinking boiled water
B. Washing hands before meals
C. Eating uncovered food from roadside ✓
D. Proper sanitation

Answer: C. Eating uncovered food from roadside
Eating uncovered food from roadside increases the risk of ingesting parasite cysts and contaminated material. The other options help prevent infection.

The best control strategy for vector-borne parasitic diseases is to ____.

A. Treat only the symptoms
B. Eliminate the vector and interrupt transmission ✓
C. Avoid all proteins in diet
D. Use antibiotics without diagnosis

Answer: B. Eliminate the vector and interrupt transmission
Control of vector-borne diseases like malaria and filariasis depends on reducing or eliminating the vector and breaking the transmission cycle. Treatment alone may not stop spread in the community.

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