LU3.1 Intro Pt1. SCAQ Practice

General Concepts in Parasitology

1. What is the study of parasites and their interactions with hosts called?

   • a) Mycology

   • b) Parasitology

   • c) Bacteriology

   • d) Virology

2. Which of the following is NOT a type of symbiotic relationship?

   • a) Mutualism

   • b) Parasitism

   • c) Commensalism

   • d) Cannibalism

3. What is the main characteristic of parasitism?

   • a) Both organisms benefit

   • b) One organism benefits while the other is harmed

   • c) Both organisms remain unaffected

   • d) One organism provides shelter for another without harm

4. Which of the following is an example of a mutualistic relationship?

   • a) Tapeworm in the human intestine

   • b) Bees pollinating flowers

   • c) Mosquito feeding on human blood

   • d) Ticks on a dog

Types of Parasites

5. Which of the following is an endoparasite?

   • a) Flea

   • b) Tick

   • c) Plasmodium spp.

   • d) Lice

6. What is a characteristic of an ectoparasite?

   • a) Lives inside the host

   • b) Requires a secondary host

   • c) Lives on the outer surface of the host

   • d) Can reproduce without a host

7. Which of the following is an obligate parasite?

   • a) Naegleria fowleri

   • b) Plasmodium spp.

   • c) Strongyloides stercoralis

   • d) Acanthamoeba spp.

8. What is an accidental parasite?

   • a) A parasite that normally lives in one host but occasionally infects another

   • b) A parasite that can survive without a host

   • c) A parasite that lives freely in the environment

   • d) A parasite that requires multiple hosts to complete its life cycle

Classification of Medically Important Parasites

9. Which of the following is a protozoan parasite?

   • a) Taenia solium

   • b) Schistosoma mansoni

   • c) Giardia lamblia

   • d) Wuchereria bancrofti

10. Nematodes are commonly referred to as:

• a) Flatworms

• b) Roundworms

• c) Flukes

• d) Ciliates

11. What is a defining characteristic of cestodes?

• a) Segmented, tape-like body

• b) Round, cylindrical body

• c) Presence of cilia for movement

• d) Absence of a digestive system

12. Which of the following is a blood trematode?

• a) Fasciola hepatica

• b) Schistosoma haematobium

• c) Clonorchis sinensis

• d) Paragonimus westermani

Protozoan Parasites

13. Which protozoan parasite causes malaria?

• a) Giardia lamblia

• b) Plasmodium spp.

• c) Trypanosoma cruzi

• d) Toxoplasma gondii

14. What is the mode of transmission for Giardia lamblia?

• a) Mosquito bite

• b) Ingestion of contaminated water

• c) Sexual contact

• d) Airborne droplets

15. Which of the following is a ciliate protozoan?

• a) Trypanosoma brucei

• b) Balantidium coli

• c) Entamoeba histolytica

• d) Cryptosporidium parvum

16. What is the primary organ affected in amebiasis caused by Entamoeba histolytica?

• a) Lungs

• b) Liver

• c) Intestines

• d) Kidneys

Helminths (Worm Parasites)

17. Which of the following is a tissue-dwelling nematode?

• a) Trichuris trichiura

• b) Brugia malayi

• c) Enterobius vermicularis

• d) Ancylostoma duodenale

18. What is the intermediate host for Taenia solium?

• a) Humans

• b) Mosquitoes

• c) Pigs

• d) Birds

19. Which trematode causes urinary schistosomiasis?

• a) Schistosoma mansoni

• b) Schistosoma haematobium

• c) Clonorchis sinensis

• d) Fasciola hepatica

20. What is the infective stage of hookworms?

• a) Eggs

• b) Larvae

• c) Cysts

• d) Adult worms

Hosts and Life Cycles

21. What is the definitive host for Plasmodium spp.?

• a) Humans

• b) Mosquitoes

• c) Snails

• d) Pigs

22. Which of the following is an example of an intermediate host?

• a) Mosquito for malaria parasites

• b) Human for Taenia solium

• c) Dog for Leishmania donovani

• d) Rat for Toxoplasma gondii

23. Which type of host does NOT support further development of a parasite?

• a) Definitive host

• b) Intermediate host

• c) Paratenic host

• d) Reservoir host

24. What is the main function of a reservoir host?

• a) To permanently house the parasite

• b) To provide nutrients for the parasite

• c) To serve as an alternative host for a parasite in the absence of its main host

• d) To act as a vector for parasite transmission

Vector-Borne Diseases

25. Which vector transmits African trypanosomiasis?

• a) Tsetse fly

• b) Sand fly

• c) Anopheles mosquito

• d) Deer fly

26. Which of the following diseases is transmitted by a biological vector?

• a) Malaria

• b) Amoebiasis

• c) Giardiasis

• d) Balantidiasis

27. Which mosquito genus is responsible for transmitting malaria?

• a) Culex

• b) Anopheles

• c) Aedes

• d) Mansonia

Parasitic Disease Control and Prevention

28. What is the primary method for preventing schistosomiasis?

• a) Wearing insect repellent

• b) Avoiding contaminated water sources

• c) Using antibiotics

• d) Drinking boiled water

29. What is a major challenge in controlling vector-borne parasitic diseases?

• a) Development of resistance to insecticides

• b) Lack of effective medications

• c) High transmission in cold climates

• d) Short lifespan of vectors

30. What is the best approach to managing parasitic infections?

• a) Relying solely on medication

• b) Implementing integrated control measures, including sanitation, vector control, and treatment

• c) Using antibiotics for all cases

• d) Reducing the number of domestic animals

Answer Key

1 b 2. d 3. b 4. b 5. c 6. c 7. b 8. a 9. c 10. b

11 a 12. b 13. b 14. b 15. b 16. c 17. b 18. c 19. b 20. b

21 b 22. a 23. c 24. c 25. a 26. a 27. b 28. b 29. a 30. b