1. all protozoan pathogens have a _ phase
- cyst
- sexual
- trophozoite
- blood
[expand title=”Show Answer”]trophozoite
[/expand]
2. Entamoeba histolytica primarily invades the
- liver
- large intestine
- small intestine
- lungs
[expand title=”Show Answer”]large intestine
[/expand]
3. Giardia is a / an _ that invades the __
- flagellate, large intestine
- amoeba, small intestine
- ciliate, large intestine
- flagellate, small intestine
[expand title=”Show Answer”]flagellate, small intestine
[/expand]
4. Hemoflagellates are transmitted by:
- mosquito bites
- insect vectors
- bug feces
- contaminated food
[expand title=”Show Answer”]insect vectors
[/expand]
5. Plasmodium reproduces sexually in the _ and asexually in the __
- -liver, red blood cells
- mosquito , human
- human, mosquito
- red blod cell, liver
[expand title=”Show Answer”]mosquito, human
[/expand]
6. In the exoerythrocytic phase of infection, Plasmodium invades the :
- blood cells
- heart muscle
- salivary glands
- liver
[expand title=”Show Answer”]liver
[/expand]
7. an oocyst is found in , and a pseudocyst is found in __
- humans, cats
- cats, humans
- feces, tissue
- tissue, feces
[expand title=”Show Answer”]feces, tissue
[/expand]
8. a person can acquire toxoplasmosis from
- pseudocysts in raw meat
- oocysts in air
- cleaning out the cat litter box
[expand title=”Show Answer”]all of these
pseudocysts in raw meat
oocysts in air
cleaning out the cat litter box
[/expand]
9. all adult helminths produce :
- -cysts and trophozoites
- scolex and proglottids
- fertilized eggs and larvae
- hooks and cuticles
[expand title=”Show Answer”]fertilized eggs and larvae
[/expand]
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
[expand title=”Show Answer”]intermediate , definitive
[/expand]
11. antihelminthic medications work by :
- paralyzing the worm
- disrupting the worm’s metabolism
- causing vomiting
[expand title=”Show Answer”]- paralyzing the worm
– disrupting the worm’s metabolism
[/expand]
12. host defenses that are most active in worm infestations:
- phagocytes
- antibodies
- killer T cells
- eosinophils
[expand title=”Show Answer”]eosinophils
[/expand]
13. Currently , the most common nematode infestation worldwide is :
- hookworm
- ascariasis
- tapeworm
- trichinosis
[expand title=”Show Answer”]ascariasis
[/expand]
14. Hookworm diseases are spread by :
- the feces of humans
- mosquito bites
- contaminated food
- microscopic invertebrates in drinking water
[expand title=”Show Answer”]the feces of humans
[/expand]
15. Trichinosis can only be spread from human to human by :
- cannibalism
- flies
- raw port
- contaminated water
[expand title=”Show Answer”]cannibalism
[/expand]
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
[expand title=”Show Answer”]lymphatic circulation being blocked by filarial worm
[/expand]
17. Which of the following is not considered an insect vector?
- flea
- mosquito
- tick
- tsetse fly
[expand title=”Show Answer”]tick
[/expand]
18. The _ mosquito feeds on blood, which is required for development of __
- male, larvae
- male, parasites
- female, GI tract
- female, eggs
[expand title=”Show Answer”]female , eggs
[/expand]
