Question 1

Nematodes

Accepted Answer

A)  have males of the species larger than females of the species. 
B)  are known as roundworms. 
C)  do not have a digestive system. 
D)  are known as flukes. 
E)  are all monoecious. 
A)  have males of the species larger than females of the species. 
B)  are known as roundworms. 
C)  do not have a digestive system. 
D)  are known as flukes. 
E)  are all monoecious.

Question 2

Which of the following regarding all of the tapeworms that infect humans is TRUE?

Accepted Answer

A)  They reside in the muscle tissue of the definitive host. 
B)  They are transmitted by insect vectors. 
C)  Humans are the normal intermediate hosts. 
D)  They all have non- human intermediate hosts. 
E)  The larva can directly infect humans upon contact with skin. 
A)  They reside in the muscle tissue of the definitive host. 
B)  They are transmitted by insect vectors. 
C)  Humans are the normal intermediate hosts. 
D)  They all have non- human intermediate hosts. 
E)  The larva can directly infect humans upon contact with skin.

Question 3

Contact with infected cats and their feces is the only mode of transmission of Toxoplasma to humans.

Accepted Answer

A) True 
 B)False

Question 4

The most common nematode infection worldwide is (ascariasis/filariasis/pinworms).

Accepted Answer

The answer of The most common nematode infection worldwide is...

Question 5

Most diagnostic techniques are not very effective for Cryptosporidium.

Accepted Answer

A) True 
 B)False

Question 6

Balantidium coli uses to penetrate the intestinal mucosa.

Accepted Answer

A)  cilia 
B)  suckers 
C)  adhesion discs 
D)  flagella 
E)  pseudopodia 
A)  cilia 
B)  suckers 
C)  adhesion discs 
D)  flagella 
E)  pseudopodia

Question 7

With each wave of replication, (amoebae/plasmodia/trypanosomes) change their glycoprotein surface antigens.

Accepted Answer

The answer of With each wave of replication, (amoebae/plasmodia/trypanosomes) change...

Question 8

The (definitive/intermediate) host is where immature stages of parasites develop.

Accepted Answer

The answer of The (definitive/intermediate) host is where immature stages...

Question 9

The protozoans known as apicomplexans

Accepted Answer

A)  are motile. 
B)  reproduce by schizogony and are intracellular parasites. 
C)  reproduce by schizogony. 
D)  are intracellular parasites. 
E)  are motile intracellular parasites. 
A)  are motile. 
B)  reproduce by schizogony and are intracellular parasites. 
C)  reproduce by schizogony. 
D)  are intracellular parasites. 
E)  are motile intracellular parasites.

Question 10

Severe watery diarrhea with a "rotten- egg" smell accompanied by abdominal pain, bloating, and fever are signs and symptoms consistent with

Accepted Answer

A)  Chagas' disease. 
B)  cryptosporidiosis. 
C)  balantidiasis. 
D)  giardiasis. 
E)  leishmaniasis. 
A)  Chagas' disease. 
B)  cryptosporidiosis. 
C)  balantidiasis. 
D)  giardiasis. 
E)  leishmaniasis.

Question 11

Because Plasmodium (falciparum/malariae/ovale/vivax) requires Duffy antigens to attach to and infect erythrocytes, Duffy- negative individuals are immune to this parasite.

Accepted Answer

The answer of Because Plasmodium (falciparum/malariae/ovale/vivax) requires Duffy antigens to...

Question 12

Anemia is a common consequence of hookworm infection.

Accepted Answer

A) True 
 B)False

Question 13

A contact lens wearer and cat owner begins to experience problems with her eye. The eye is inflamed and painful, and examination of the eye reveals that the conjunctiva is ulcerating. Which of the following parasites could be responsible?

Accepted Answer

A)  Cryptosporidium parvum 
B)  Toxoplasma gondii 
C)  Trypanosoma cruzi 
D)  Entamoeba histolytica 
E)  Acanthamoeba 
A)  Cryptosporidium parvum 
B)  Toxoplasma gondii 
C)  Trypanosoma cruzi 
D)  Entamoeba histolytica 
E)  Acanthamoeba

Question 14

The (cestodes/nematodes/trematodes) are helminths with an incomplete digestive system.

Accepted Answer

The answer of The (cestodes/nematodes/trematodes) are helminths with an incomplete...

Question 15

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

Accepted Answer

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

Question 16

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 17

Which of the following intestinal protozoa are considered parasites of humans only?

Accepted Answer

A)  Entamoeba histolytica 
B)  Cyclospora cayentanensis 
C)  Balantidium coli 
D)  Giardia intestinalis 
E)  both Entamoeba histolytica and Cyclospora cayentanensis 
A)  Entamoeba histolytica 
B)  Cyclospora cayentanensis 
C)  Balantidium coli 
D)  Giardia intestinalis 
E)  both Entamoeba histolytica and Cyclospora cayentanensis

Question 18

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

Accepted Answer

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

Question 19

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

Accepted Answer

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

Question 20

Enterobius vermicularis are commonly known as (pinworms/hookworms/tapeworms) because of the shape of the female's tail.

Accepted Answer

The answer of Enterobius vermicularis are commonly known as (pinworms/hookworms/tapeworms)...

Exam 23: Parasitic Protozoa, Helminths, and Arthropod Vectors

Nematodes

Which of the following regarding all of the tapeworms that infect humans is TRUE?

Contact with infected cats and their feces is the only mode of transmission of Toxoplasma to humans.

The most common nematode infection worldwide is (ascariasis/filariasis/pinworms).

Most diagnostic techniques are not very effective for Cryptosporidium.

Balantidium coli uses to penetrate the intestinal mucosa.

With each wave of replication, (amoebae/plasmodia/trypanosomes) change their glycoprotein surface antigens.

The (definitive/intermediate) host is where immature stages of parasites develop.

The protozoans known as apicomplexans

Severe watery diarrhea with a "rotten- egg" smell accompanied by abdominal pain, bloating, and fever are signs and symptoms consistent with

Because Plasmodium (falciparum/malariae/ovale/vivax) requires Duffy antigens to attach to and infect erythrocytes, Duffy- negative individuals are immune to this parasite.

Anemia is a common consequence of hookworm infection.

A contact lens wearer and cat owner begins to experience problems with her eye. The eye is inflamed and painful, and examination of the eye reveals that the conjunctiva is ulcerating. Which of the following parasites could be responsible?

The (cestodes/nematodes/trematodes) are helminths with an incomplete digestive system.

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

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

Which of the following intestinal protozoa are considered parasites of humans only?

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

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

Enterobius vermicularis are commonly known as (pinworms/hookworms/tapeworms) because of the shape of the female's tail.

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 Disease, 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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