Question 1

Which of the following is acquired when amoebas are forced into human nasal passages during swimming?

Accepted Answer

A) Naegleria fowleri 
B) Toxoplasma gondii 
C) Balantidium coli 
D) Giardia lamblia 
E) Entamoeba histolytica 
A) Naegleria fowleri 
B) Toxoplasma gondii 
C) Balantidium coli 
D) Giardia lamblia 
E) Entamoeba histolytica A

Question 2

Schistosomiasis involves

Accepted Answer

A) a blood fluke. 
B) eggs from humans enter water and develop into miracidium. 
C) snails allow development into cercaria. 
D) cercariae enter hair follicles and pass to the blood and then the liver. 
E) All of the choices are correct. 
A) a blood fluke. 
B) eggs from humans enter water and develop into miracidium. 
C) snails allow development into cercaria. 
D) cercariae enter hair follicles and pass to the blood and then the liver. 
E) All of the choices are correct. E

Question 3

Only feces from humans that contaminates food and water can be involved in transmission of amebiasis.

Accepted Answer

A) True 
 B)False  True

Question 4

Trichinosis includes all the following, except

Accepted Answer

A) encysted larvae get ingested. 
B) associated with undercooked pork or bear meat. 
C) migrate from intestines to blood and various body tissues. 
D) the first symptoms are diarrhea, nausea, fever, and pain. 
E) All of the choices are correct. 
A) encysted larvae get ingested. 
B) associated with undercooked pork or bear meat. 
C) migrate from intestines to blood and various body tissues. 
D) the first symptoms are diarrhea, nausea, fever, and pain. 
E) All of the choices are correct.

Question 5

Ascaris lumbricoides

Accepted Answer

A) is an intestinal roundworm. 
B) spreads to humans by ingestion of Ascaris eggs in food. 
C) larvae penetrate into lymphatics and capillaries around intestines. 
D) larvae migrate to the pharynx, get swallowed, and return to intestines to mature. 
E) All of the choices are correct. 
A) is an intestinal roundworm. 
B) spreads to humans by ingestion of Ascaris eggs in food. 
C) larvae penetrate into lymphatics and capillaries around intestines. 
D) larvae migrate to the pharynx, get swallowed, and return to intestines to mature. 
E) All of the choices are correct.

Question 6

Trichinella spiralis is a/an _________ that invades the __________.

Accepted Answer

A) roundworm, intestine and muscle 
B) ameba, intestine 
C) flagellate, large intestine 
D) flatworm, heart 
E) tapeworm, lungs 
A) roundworm, intestine and muscle 
B) ameba, intestine 
C) flagellate, large intestine 
D) flatworm, heart 
E) tapeworm, lungs

Question 7

River blindness is

Accepted Answer

A) caused by Wuchereria bancrofti. 
B) a disease in which worms can invade the eyes. 
C) caused by a blood fluke. 
D) transmitted by mosquito vector. 
E) All of the choices are correct. 
A) caused by Wuchereria bancrofti. 
B) a disease in which worms can invade the eyes. 
C) caused by a blood fluke. 
D) transmitted by mosquito vector. 
E) All of the choices are correct.

Question 8

Plasmodium species are hemoflagellates.

Accepted Answer

A) True 
 B)False

Question 9

Elephantiasis includes all the following, except

Accepted Answer

A) it is caused by filarial nematodes. 
B) helminth is transmitted by black fly vectors. 
C) larval infestation causes blockage of main lymphatic channels. 
D) severe edema occurs in the extremities and scrotum. 
E) microfilariae are in the blood. 
A) it is caused by filarial nematodes. 
B) helminth is transmitted by black fly vectors. 
C) larval infestation causes blockage of main lymphatic channels. 
D) severe edema occurs in the extremities and scrotum. 
E) microfilariae are in the blood.

Question 10

Which is mismatched?

Accepted Answer

A) Diphyllobothrium latum - fish 
B) Taenia solium - pork 
C) Taenia saginata - beef 
D) Echinococcus granulosus - poultry 
E) Anisakis - fish 
A) Diphyllobothrium latum - fish 
B) Taenia solium - pork 
C) Taenia saginata - beef 
D) Echinococcus granulosus - poultry 
E) Anisakis - fish

Question 11

Many protozoan species can form a _____ that can survive for periods outside a host.

Accepted Answer

The answer of Many protozoan species can form a _____...

Question 12

All of the following pertain to tapeworms, except

Accepted Answer

A) scolex is the head. 
B) strobila is made up of proglottids. 
C) proglottids are reproductive segments. 
D) cysticerci are young infective larvae ingested in undercooked meat. 
E) one proglottid segment will have either female or male reproductive organs. 
A) scolex is the head. 
B) strobila is made up of proglottids. 
C) proglottids are reproductive segments. 
D) cysticerci are young infective larvae ingested in undercooked meat. 
E) one proglottid segment will have either female or male reproductive organs.

Question 13

Acanthamoeba differs from Naegleria fowleri in that only Acanthamoeba

Accepted Answer

A) is a free-living ameba of fresh waters. 
B) enters typically through broken skin or the conjunctiva. 
C) is the cause of primary amebic meningoencephalitis. 
D) enters through the nasal mucosa. 
E) is acquired by swimming in contaminated water. 
A) is a free-living ameba of fresh waters. 
B) enters typically through broken skin or the conjunctiva. 
C) is the cause of primary amebic meningoencephalitis. 
D) enters through the nasal mucosa. 
E) is acquired by swimming in contaminated water.

Question 14

Which is not correct about kala azar?

Accepted Answer

A) It is fatal in untreated cases. 
B) Chemotherapy with chloroquine is usually effective. 
C) Death is partly due to anemia, destruction of blood-forming tissues, and secondary infections. 
D) It is transmitted by the sand fly. 
E) It is a form of leishmaniasis. 
A) It is fatal in untreated cases. 
B) Chemotherapy with chloroquine is usually effective. 
C) Death is partly due to anemia, destruction of blood-forming tissues, and secondary infections. 
D) It is transmitted by the sand fly. 
E) It is a form of leishmaniasis.

Question 15

Which parasite is carried by Cyclops, an arthropod commonly found in still water?

Accepted Answer

A) Schistosoma mansoni 
B) Dracunculus medinesis 
C) Fasciola hepatica 
D) Taenia saginata 
E) Toxoplasma gondii 
A) Schistosoma mansoni 
B) Dracunculus medinesis 
C) Fasciola hepatica 
D) Taenia saginata 
E) Toxoplasma gondii

Question 16

Compare and contrast giardiasis and amebiasis with regard to: a) causative agent, b) transmission, c) infection site in body, d) signs and symptoms, e) prevention, and f) treatment.

Accepted Answer

a) Causative agent:
- Giardiasis is caus

Question 17

Chagas disease involves transmission of the pathogen by the

Accepted Answer

A) reduviid, "kissing," bug. 
B) tsetse fly. 
C) Anopheles mosquito. 
D) phlebotomine (sand) fly. 
E) hard-bodied tick. 
A) reduviid, "kissing," bug. 
B) tsetse fly. 
C) Anopheles mosquito. 
D) phlebotomine (sand) fly. 
E) hard-bodied tick.

Question 18

Which is mismatched?

Accepted Answer

A) Whipworm - trematode 
B) Pinworm - nematode 
C) Threadworm - nematode 
D) Fluke - trematode 
E) Tapeworm - cestode 
A) Whipworm - trematode 
B) Pinworm - nematode 
C) Threadworm - nematode 
D) Fluke - trematode 
E) Tapeworm - cestode

Question 19

Toxoplasmosis includes all the following, except

Accepted Answer

A) ingesting pseudocysts from contaminated raw or undercooked meat. 
B) ingesting or inhaling oocysts from infected cats or cat feces. 
C) tachyzoites can cross the placenta. 
D) immunocompromised patients often develop a fatal, disseminated infection. 
E) intrauterine infectious are generally mild with very little damage to fetal tissues. 
A) ingesting pseudocysts from contaminated raw or undercooked meat. 
B) ingesting or inhaling oocysts from infected cats or cat feces. 
C) tachyzoites can cross the placenta. 
D) immunocompromised patients often develop a fatal, disseminated infection. 
E) intrauterine infectious are generally mild with very little damage to fetal tissues.

Question 20

Hookworms and threadworms usually enter the body by penetrating into the skin.

Accepted Answer

A) True 
 B)False

Exam 23: The Parasites of Medical Importance

Which of the following is acquired when amoebas are forced into human nasal passages during swimming?

Schistosomiasis involves

Only feces from humans that contaminates food and water can be involved in transmission of amebiasis.

Trichinosis includes all the following, except

Ascaris lumbricoides

Trichinella spiralis is a/an _________ that invades the __________.

River blindness is

Plasmodium species are hemoflagellates.

Elephantiasis includes all the following, except

Which is mismatched?

Many protozoan species can form a _____ that can survive for periods outside a host.

All of the following pertain to tapeworms, except

Acanthamoeba differs from Naegleria fowleri in that only Acanthamoeba

Which is not correct about kala azar?

Which parasite is carried by Cyclops, an arthropod commonly found in still water?

Compare and contrast giardiasis and amebiasis with regard to: a) causative agent, b) transmission, c) infection site in body, d) signs and symptoms, e) prevention, and f) treatment.

Chagas disease involves transmission of the pathogen by the

Which is mismatched?

Toxoplasmosis includes all the following, except

Hookworms and threadworms usually enter the body by penetrating into the skin.

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Prokaryotic Cells and Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

An Introduction to Viruses

Microbial Nutrition, Ecology, and Growth

An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

An Introduction to Microbial Genetics

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host-The Elements of Chemotherapy

Microbe-Human Interactions: Infection, Disease, and Epidemiology

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Fungi of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Environmental Microbiology

Applied and Industrial Microbiology

Filters

Trichinella spiralis is a/an _ that invades the __.