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Problem 1
Match the numbered organism with the correct lettered term. Answers may be used more than once, and an organism may have more than one answer.
1. ___ Balantidium coli
2. ___ Echinococcus granulosus
3. ___ Fasciola spp.
4. ___ Leishmania spp.
5. ___ Plasmodium falciparum
6. ___ Plasmodium vivax
7. ___ Taenia spp.
8. ___ Toxoplasma gondii
9. ___ Trypanosoma
10. ___ Wuchereria bancrofti
A. Miracidia
B. Bradyzoites
C. Schizogony
D. Microfilaria
E. Hydatid cyst
F. Cysticerci
G. Trophozoites
H. Amastigotes
I. Hypnozoites
J. Flagellated trypanosomes
Problem 1
Mark each statement as true or false. Rewrite the false statements to make them true by changing the underlined word(s).
__________ Sexual contact is the most common method of transmission of parasites.
Problem 1
Parasitology is the study of parasitic:
a. A.viruses
b. Prokaryotes
c. Fungi
d. Eukaryotes
Problem 1
Balantidium coli can be distinguished from Entamoeba histolytica microscopically because B. coli has ___________.
Problem 1
Label the three stages of the Plasmodium life cycle and label the forms of the parasite where indicated.
Problem 1
Why do insect vectors and animal reservoirs increase the difficulty of preventing and controlling parasitic infections in humans?
Problem 2
How is the transmission of the amoeba Entamoeba different from the transmission of the amoebas Acanthamoeba and Naegleria?
Problem 2
____________ may be transmitted to humans from cat litter boxes.
Problem 2
The only ciliate to cause disease in humans is __________.
a. Naegleria
b. Balantidium
c. Fasciola
d. Trypanosoma
Problem 2
Identify the genera of the parasites in these clinical specimens.
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fecal anal
a. ________ b. _________
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blood fecal
c. _________ d. _________
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vaginal blood
e. _________ f. __________
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fecal fecal
g. ___________ h. ___________
Problem 2
Mark each statement as true or false. Rewrite the false statements to make them true by changing the underlined word(s).
__________ Examination of stool samples can reveal the presence of Naegleria parasites.
Problem 3
Mark each statement as true or false. Rewrite the false statements to make them true by changing the underlined word(s).
__________ Trichomonas vaginalis is the most common parasitic protozoan of humans in the industrialized world.
Problem 3
Which of the following organisms is regularly transmitted sexually? __________
a. Trichomonas
b. Entamoeba
c. Trypanosoma
d. Enterobius
Problem 3
African sleeping sickness is caused by Trypanosoma ______________ but not by Trypanosoma _____________.
Problem 4
Leishmania species are transmitted by __________.
a. sand flies
b. tsetse flies
c. kissing bugs
d. mosquitoes
Problem 4
Mark each statement as true or false. Rewrite the false statements to make them true by changing the underlined word(s).
__________ Trypanosoma brucei is transmitted by tsetse flies, and Trypanosoma cruzi is transmitted by kissing bugs.
Problem 4
The parasitic amoeba _____________ can be acquired by ingestion.
Problem 5
Both Plasmodium vivax and P. ovale can form dormant ______________.
Problem 5
Mark each statement as true or false. Rewrite the false statements to make them true by changing the underlined word(s).
__________ Plasmodium falciparum causes the most serious form of malaria.
Problem 5
Which of the following is the name of the intracellular infection stage of Leishmania? __________
a. Miracidia
b. Metacercaria
c. Bradyzoite
d. Amastigote
Problem 6
In malaria, which stage occurs in red blood cells? __________
a. Liver phase
b. Erythrocytic cycle
c. Sporogonic phase
d. Amastigote cycle
Problem 6
Mark each statement as true or false. Rewrite the false statements to make them true by changing the underlined word(s).
__________ Toxoplasmosis can be transmitted across a placenta.
Problem 6
Of the parasitic helminths discussed in this chapter, the only one transmitted by mosquitoes is _____________ .
Problem 7
The following helminths can directly penetrate the skin of humans to establish infection:, ____________ , _____________ , and ________________ (give genera only).
Problem 7
The definitive host for Toxoplasma gondii is __________.
a. humans
b. cats
c. birds
d. mosquitoes
Problem 7
Mark each statement as true or false. Rewrite the false statements to make them true by changing the underlined word(s).
__________ Humans can become intermediate hosts for Taenia saginata.
Problem 8
Mark each statement as true or false. Rewrite the false statements to make them true by changing the underlined word(s).
__________ Fasciola hepatica can be acquired by eating infected sheep.
Problem 8
A trematode that can be acquired by eating raw or undercooked vegetables is _____________ .
Problem 8
Tapeworms are generally transmitted via ______.
a. consumption of an intermediate host
b. consumption of the definitive host
c. vectors such as mosquitoes
d. consumption of adult tapeworms
Problem 9
Cryptosporidium cannot be killed by routine boiling. Another parasite resistant to such boiling is __________.
a. Giardia
b. Trypanosoma
c. Toxoplasma
d. Plasmodium
