Question 1

Leishmania species cause systemic disease as well as superficial diseases.

Accepted Answer

A) True 
 B)False

Question 2

The easiest way to prevent Taenia infection in humans is to

Accepted Answer

A)  vaccinate cows and pigs. 
B)  vaccinate humans who are in contact with cows and pigs. 
C)  spray pastures and grazing lands with toxins that kill the parasite. 
D)  thoroughly cook or freeze meat. 
E)  identify patients with cysticerci in their muscles. 
A)  vaccinate cows and pigs. 
B)  vaccinate humans who are in contact with cows and pigs. 
C)  spray pastures and grazing lands with toxins that kill the parasite. 
D)  thoroughly cook or freeze meat. 
E)  identify patients with cysticerci in their muscles.

Question 3

The (brain/heart/liver)is the organ most severely damaged by Trypanosoma cruzi.

Accepted Answer

The answer of The (brain/heart/liver)is the organ most severely damaged...

Question 4

Which of the following is transmitted by the fecal-oral route?

Accepted Answer

A)  Entamoeba histolytica 
B)  Plasmodium 
C)  Schistosoma 
D)  Trichomonas 
E)  Schistosoma and Trichomonas 
A)  Entamoeba histolytica 
B)  Plasmodium 
C)  Schistosoma 
D)  Trichomonas 
E)  Schistosoma and Trichomonas

Question 5

Apicomplexans reproduce asexually by (mitosis/schizogony/fission).

Accepted Answer

The answer of Apicomplexans reproduce asexually by (mitosis/schizogony/fission)....

Question 6

All flukes are monoecious.

Accepted Answer

A) True 
 B)False

Question 7

Eating undercooked (fish/pork/snails/vegetables)can result in infestation with Taenia solium.

Accepted Answer

The answer of Eating undercooked (fish/pork/snails/vegetables)can result in infestation with...

Question 8

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 is most likely responsible?

Accepted Answer

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

Question 9

Which of the following is an accidental parasite of humans?

Accepted Answer

A)  Ascaris lumbricoides 
B)  Acanthamoeba 
C)  Balantidium coli 
D)  Entamoeba histolytica 
E)  Plasmodium 
A)  Ascaris lumbricoides 
B)  Acanthamoeba 
C)  Balantidium coli 
D)  Entamoeba histolytica 
E)  Plasmodium

Question 10

Plasmodium reproduces by binary fission.

Accepted Answer

A) True 
 B)False

Question 11

Humans can be accidental intermediate hosts for some tapeworms.

Accepted Answer

A) True 
 B)False

Question 12

Once infected with Trypanosoma brucei,the patient's immune system cannot clear the infection and develop immunity because the parasite

Accepted Answer

A)  has flagella that allow it to travel all over the body. 
B)  matures into infectious trypomastigotes. 
C)  reproduces by binary fission. 
D)  changes its glycoprotein surface antigens every time it replicates. 
E)  invades the central nervous system. 
A)  has flagella that allow it to travel all over the body. 
B)  matures into infectious trypomastigotes. 
C)  reproduces by binary fission. 
D)  changes its glycoprotein surface antigens every time it replicates. 
E)  invades the central nervous system.

Question 13

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 digestive...

Question 14

The parasites classified as Nematodes

Accepted Answer

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

Question 15

The infectious stage of a beef tapeworm for humans is the

Accepted Answer

A)  gravid proglottids in feces. 
B)  eggs in contaminated water. 
C)  larvae in feces. 
D)  cysticerci in beef. 
E)  mature worms. 
A)  gravid proglottids in feces. 
B)  eggs in contaminated water. 
C)  larvae in feces. 
D)  cysticerci in beef. 
E)  mature worms.

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

The protozoans known as apicomplexans

Accepted Answer

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

Question 18

Which of the following parasitic infections can be diagnosed using a blood smear?

Accepted Answer

A)  African sleeping sickness 
B)  toxoplasmosis 
C)  malaria 
D)  African sleeping sickness and malaria 
E)  toxoplasmosis and malaria 
A)  African sleeping sickness 
B)  toxoplasmosis 
C)  malaria 
D)  African sleeping sickness and malaria 
E)  toxoplasmosis and malaria

Question 19

Humans become infected with Toxoplasma gondii primarily by

Accepted Answer

A)  being bitten by a tick. 
B)  direct skin penetration. 
C)  ingesting food or water contaminated with cysts. 
D)  ingesting meat containing the parasite. 
E)  intimate contact with another person. 
A)  being bitten by a tick. 
B)  direct skin penetration. 
C)  ingesting food or water contaminated with cysts. 
D)  ingesting meat containing the parasite. 
E)  intimate contact with another person.

Question 20

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

Accepted Answer

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

Exam 23: Parasitic Protozoa, Helminths, and Arthropod Vectors

Leishmania species cause systemic disease as well as superficial diseases.

The easiest way to prevent Taenia infection in humans is to

The (brain/heart/liver)is the organ most severely damaged by Trypanosoma cruzi.

Which of the following is transmitted by the fecal-oral route?

Apicomplexans reproduce asexually by (mitosis/schizogony/fission).

All flukes are monoecious.

Eating undercooked (fish/pork/snails/vegetables)can result in infestation with Taenia solium.

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 is most likely responsible?

Which of the following is an accidental parasite of humans?

Plasmodium reproduces by binary fission.

Humans can be accidental intermediate hosts for some tapeworms.

Once infected with Trypanosoma brucei,the patient's immune system cannot clear the infection and develop immunity because the parasite

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

The parasites classified as Nematodes

The infectious stage of a beef tapeworm for humans is the

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

The protozoans known as apicomplexans

Which of the following parasitic infections can be diagnosed using a blood smear?

Humans become infected with Toxoplasma gondii primarily by

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

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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