Question 1

A human fecal sample is examined and found to contain a few strobila.The person is probably infected with

Accepted Answer

A)  Echinococcus granulosus. 
B)  Giardia intestinalis. 
C)  Taenia. 
D)  Schistosoma. 
E)  Necator americanus. 
A)  Echinococcus granulosus. 
B)  Giardia intestinalis. 
C)  Taenia. 
D)  Schistosoma. 
E)  Necator americanus.

Question 2

Entamoeba histolytica can cause keratitis if it is introduced through an abrasion in the conjunctiva.

Accepted Answer

A) True 
 B)False

Question 3

Why is snail fever a common name for infections with Schistosoma?

Accepted Answer

A)  The worms look like snails. 
B)  They are contracted by eating snails. 
C)  Snails are the intermediate host. 
D)  Physical contact with snails may result in infection. 
E)  The larval stage looks like a snail. 
A)  The worms look like snails. 
B)  They are contracted by eating snails. 
C)  Snails are the intermediate host. 
D)  Physical contact with snails may result in infection. 
E)  The larval stage looks like a snail.

Question 4

The helminth parasite Schistosoma

Accepted Answer

A)  is a cestode. 
B)  uses snails as an intermediate host. 
C)  has proglottids. 
D)  is a roundworm. 
E)  is a liver fluke. 
A)  is a cestode. 
B)  uses snails as an intermediate host. 
C)  has proglottids. 
D)  is a roundworm. 
E)  is a liver fluke.

Question 5

Compare and contrast infection with Taenia saginata and Echinococcus granulosus in humans,including the consequences of the infections.

Accepted Answer

Both of these parasites are cestodes (ta

Question 6

An intestinal parasite that is an emerging disease in North America,(Cryptosporidium/Cyclospora/Entamoeba)causes a watery diarrhea with fever.

Accepted Answer

The answer of An intestinal parasite that is an emerging...

Question 7

The vectors of ________ are sand flies.

Accepted Answer

A)  beaver fever 
B)  Chagas' disease 
C)  filariasis 
D)  giardiasis 
E)  leishmaniasis 
A)  beaver fever 
B)  Chagas' disease 
C)  filariasis 
D)  giardiasis 
E)  leishmaniasis

Question 8

The ________ stage of a protozoan is the actively feeding and reproducing stage.

Accepted Answer

A)  trophozoite 
B)  cyst 
C)  cysticercus 
D)  encysted 
E)  merozoite 
A)  trophozoite 
B)  cyst 
C)  cysticercus 
D)  encysted 
E)  merozoite

Question 9

Which of the following is the most common parasitic worm in the United States?

Accepted Answer

A)  Taenia saginata 
B)  Echinococcus granulosus 
C)  Schistosoma mansoni 
D)  Enterobius vermicularis 
E)  Ascaris lumbricoides 
A)  Taenia saginata 
B)  Echinococcus granulosus 
C)  Schistosoma mansoni 
D)  Enterobius vermicularis 
E)  Ascaris lumbricoides

Question 10

Which of the following contributes to infection with Trichomonas vaginalis?

Accepted Answer

A)  contact with contaminated fomites 
B)  compromised immunity 
C)  careless handwashing habits 
D)  preexisting disease (chlamydia, for example) 
E)  living in an undeveloped area of the world 
A)  contact with contaminated fomites 
B)  compromised immunity 
C)  careless handwashing habits 
D)  preexisting disease (chlamydia, for example) 
E)  living in an undeveloped area of the world

Question 11

The (proglottid/scolex/strobila)of an adult tapeworm is its anchor to the hosts intestine.

Accepted Answer

The answer of The (proglottid/scolex/strobila)of an adult tapeworm is its...

Question 12

A person reports to a clinic complaining of fever and abdominal pain.The abdomen is swollen,and blood tests indicate liver damage.A stool sample is examined under a microscope and found to contain eggs with a spine projecting from its surface.The indications are consistent with infection with

Accepted Answer

A)  Ancylostoma duodenale. 
B)  Enterobius vermicularis. 
C)  Echinococcus granulosus. 
D)  Schistosoma mansoni. 
E)  Taenia solium. 
A)  Ancylostoma duodenale. 
B)  Enterobius vermicularis. 
C)  Echinococcus granulosus. 
D)  Schistosoma mansoni. 
E)  Taenia solium.

Question 13

Which of the following organisms can colonize the nasal cavity and enter the brain to cause meningoencephalitis?

Accepted Answer

A)  Entamoeba histolytica 
B)  Acanthamoeba 
C)  Naegleria 
D)  Balantidium 
E)  Giardia 
A)  Entamoeba histolytica 
B)  Acanthamoeba 
C)  Naegleria 
D)  Balantidium 
E)  Giardia

Question 14

Which of the following nematodes can be transmitted by mosquitoes?

Accepted Answer

A)  Wuchereria bancrofti 
B)  Ascaris lumbricoides 
C)  Ancylostoma duodenale 
D)  Necator americanus 
E)  Enterobius vermicularis 
A)  Wuchereria bancrofti 
B)  Ascaris lumbricoides 
C)  Ancylostoma duodenale 
D)  Necator americanus 
E)  Enterobius vermicularis

Question 15

Balantidium coli is the only ciliate known to cause disease in humans.

Accepted Answer

A) True 
 B)False

Question 16

Acanthamoeba and (Entamoeba/Naegleria/Plasmodium)cause rare and usually fatal infections of the brain.

Accepted Answer

The answer of Acanthamoeba and (Entamoeba/Naegleria/Plasmodium)cause rare and usually fatal...

Question 17

Triatoma,commonly called "kissing bugs," are vectors of

Accepted Answer

A)  African sleeping sickness. 
B)  Chagas' disease. 
C)  Cyclosporiasis. 
D)  Leishmania. 
E)  schistosomiasis. 
A)  African sleeping sickness. 
B)  Chagas' disease. 
C)  Cyclosporiasis. 
D)  Leishmania. 
E)  schistosomiasis.

Question 18

How does the life cycle for the Trypanosoma that causes sleeping sickness differ from the one that causes Chagas' disease?

Accepted Answer

Sleeping sickness is caused by T.brucei,

Question 19

The tsetse fly is responsible for the spread of

Accepted Answer

A)  African sleeping sickness. 
B)  Chagas' disease. 
C)  filariasis. 
D)  kala-azar. 
E)  toxoplasmosis. 
A)  African sleeping sickness. 
B)  Chagas' disease. 
C)  filariasis. 
D)  kala-azar. 
E)  toxoplasmosis.

Question 20

A stool sample contains eggs that are oval and have no evidence of a spine.This observation is consistent with infestation with ________ species.

Accepted Answer

A)  Fasciola 
B)  Wuchereria 
C)  Schistosoma 
D)  Taenia 
E)  Trypanosoma 
A)  Fasciola 
B)  Wuchereria 
C)  Schistosoma 
D)  Taenia 
E)  Trypanosoma

Exam 23: Parasitic Protozoa, Helminths, and Arthropod Vectors

A human fecal sample is examined and found to contain a few strobila.The person is probably infected with

Entamoeba histolytica can cause keratitis if it is introduced through an abrasion in the conjunctiva.

Why is snail fever a common name for infections with Schistosoma?

The helminth parasite Schistosoma

Compare and contrast infection with Taenia saginata and Echinococcus granulosus in humans,including the consequences of the infections.

An intestinal parasite that is an emerging disease in North America,(Cryptosporidium/Cyclospora/Entamoeba)causes a watery diarrhea with fever.

The vectors of ________ are sand flies.

The ________ stage of a protozoan is the actively feeding and reproducing stage.

Which of the following is the most common parasitic worm in the United States?

Which of the following contributes to infection with Trichomonas vaginalis?

The (proglottid/scolex/strobila)of an adult tapeworm is its anchor to the hosts intestine.

A person reports to a clinic complaining of fever and abdominal pain.The abdomen is swollen,and blood tests indicate liver damage.A stool sample is examined under a microscope and found to contain eggs with a spine projecting from its surface.The indications are consistent with infection with

Which of the following organisms can colonize the nasal cavity and enter the brain to cause meningoencephalitis?

Which of the following nematodes can be transmitted by mosquitoes?

Balantidium coli is the only ciliate known to cause disease in humans.

Acanthamoeba and (Entamoeba/Naegleria/Plasmodium)cause rare and usually fatal infections of the brain.

Triatoma,commonly called "kissing bugs," are vectors of

How does the life cycle for the Trypanosoma that causes sleeping sickness differ from the one that causes Chagas' disease?

The tsetse fly is responsible for the spread of

A stool sample contains eggs that are oval and have no evidence of a spine.This observation is consistent with infestation with ________ species.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant DNA Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Pathogenic DNA Viruses

Pathogenic RNA Viruses

Applied and Environmental Microbiology

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