Microbiology MCQ on Protozoa


1. all protozoan pathogens have a _ phase

  • cyst
  • sexual
  • trophozoite
  • blood

2. Entamoeba histolytica primarily invades the

  • liver
  • large intestine
  • small intestine
  • lungs

3. Giardia is a / an _ that invades the __

  • flagellate, large intestine
  • amoeba, small intestine
  • ciliate, large intestine
  • flagellate, small intestine

4. Hemoflagellates are transmitted by:

  • mosquito bites
  • insect vectors
  • bug feces
  • contaminated food

5. Plasmodium reproduces sexually in the _ and asexually in the __

  • -liver, red blood cells
  • mosquito , human
  • human, mosquito
  • red blod cell, liver

6. In the exoerythrocytic phase of infection, Plasmodium invades the :

  • blood cells
  • heart muscle
  • salivary glands
  • liver

7. an oocyst is found in , and a pseudocyst is found in __

  • humans, cats
  • cats, humans
  • feces, tissue
  • tissue, feces

8. a person can acquire toxoplasmosis from

  • pseudocysts in raw meat
  • oocysts in air
  • cleaning out the cat litter box

9. all adult helminths produce :

  • -cysts and trophozoites
  • scolex and proglottids
  • fertilized eggs and larvae
  • hooks and cuticles

10. the _ host is where the larva develops, and the _ host is where the adults produce fertile eggs.

  • intermediate , definitive
  • definitive, intermediate
    -secondary, transport
  • primary, secondary

11. antihelminthic medications work by :

  • paralyzing the worm
  • disrupting the worm’s metabolism
  • causing vomiting

12. host defenses that are most active in worm infestations:

  • phagocytes
  • antibodies
  • killer T cells
  • eosinophils

13. Currently , the most common nematode infestation worldwide is :

  • hookworm
  • ascariasis
  • tapeworm
  • trichinosis

14. Hookworm diseases are spread by :

  • the feces of humans
  • mosquito bites
  • contaminated food
  • microscopic invertebrates in drinking water

15. Trichinosis can only be spread from human to human by :

  • cannibalism
  • flies
  • raw port
  • contaminated water

16. the swelling of limbs typical of elephantiasis is due to :

  • allergic reaction to the filarial worm
  • granuloma development due to inflammation by parasites
    -lymphatic circulation being blocked by filarial worm
  • heart and liver failure due to infection

17. Which of the following is not considered an insect vector?

  • flea
  • mosquito
  • tick
  • tsetse fly

18. The _ mosquito feeds on blood, which is required for development of __

  • male, larvae
  • male, parasites
  • female, GI tract
  • female, eggs

Our Domain,, has now change to
This domain will be Unavailable, All the posts from this website are transferred to the new domain. Enjoy study
Important notice
Overlay Image
Our website,, has now change to
This domain will be Unavailable, All the posts from this website are transferred to the new domain. Enjoy study
Overlay Image

Adblocker detected! Please consider reading this notice.

We've detected that you are using AdBlock Plus or some other adblocking software which is preventing the page from fully loading.

We don't have any banner, Flash, animation, obnoxious sound, or popup ad. We do not implement these annoying types of ads!

We need money to operate the site, and almost all of it comes from our online advertising.

Please add to your ad blocking whitelist or disable your adblocking software.