Question 1

A person carrying one gene for sickle-cell hemoglobin will be resistant to Plasmodium infection.

Accepted Answer

A) True 
 B)False  True

Question 2

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. E

Question 3

Which was the first disease found to be due to a protozoan that is introduced to humans by the bite of a hard body tick?
A.Cryptosporidiosis
B.Babesiosis
C.Babesiosis
D.Toxoplasmosis
E.None of the choices are correct.

Accepted Answer

B C

Question 4

All of the following will kill Giardia, except

Accepted Answer

A) boiling. 
B) ozone. 
C) iodine. 
D) chlorine in typical drinking water. 
E) All of the methods listed will kill it. 
A) boiling. 
B) ozone. 
C) iodine. 
D) chlorine in typical drinking water. 
E) All of the methods listed will kill it.

Question 5

Write a brief definition of a parasite and parasitology giving specific examples of a fungus, protozoan, and helminth.

Accepted Answer

A parasite is an organism that lives on

Question 6

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.

Question 7

Transmission of the pathogen of leishmaniasis is 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 8

An amoeba trophozoite with visible ingested RBCs that is seen in a microscopic examination of a fecal smear would likely be the pathogen _____.

Accepted Answer

Entamoeba

Question 9

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 10

Helminth species that are hermaphroditic have separate worms that have female organs and other worms that have male organs.

Accepted Answer

A) True 
 B)False

Question 11

The form lacking a free flagellum in the developmental stage of a hemoflagellate is called the

Accepted Answer

A) epimastigote. 
B) amastigote. 
C) trypomastigote. 
D) promastigote. 
E) None of the choices are correct. 
A) epimastigote. 
B) amastigote. 
C) trypomastigote. 
D) promastigote. 
E) None of the choices are correct.

Question 12

Plasmodium species are hemoflagellates.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is a sexually transmitted disease?

Accepted Answer

A) toxoplasmosis 
B) trichomoniasis 
C) giardiasis 
D) malaria 
E) balantidiasis 
A) toxoplasmosis 
B) trichomoniasis 
C) giardiasis 
D) malaria 
E) balantidiasis

Question 14

Amebiasis is a disease of the

Accepted Answer

A) conjunctiva of the eye. 
B) brain and meninges. 
C) intestines and often the liver. 
D) lung tissue. 
E) skin. 
A) conjunctiva of the eye. 
B) brain and meninges. 
C) intestines and often the liver. 
D) lung tissue. 
E) skin.

Question 15

In temperate zones, pinworms are the most common helminth infection.

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

Giardiasis involves

Accepted Answer

A) a protozoan that does not form cysts. 
B) infection of the large intestine. 
C) symptoms of abdominal pain, flatulence, and diarrhea. 
D) vector transmission. 
E) All of the choices are correct. 
A) a protozoan that does not form cysts. 
B) infection of the large intestine. 
C) symptoms of abdominal pain, flatulence, and diarrhea. 
D) vector transmission. 
E) All of the choices are correct.

Question 18

Enterobius vermicularis is

Accepted Answer

A) a whipworm. 
B) common only to the tropics and subtropics. 
C) an intestinal worm that easily contaminates fingers and fomites. 
D) often fatal in heavy infestations. 
E) All of the choices are correct. 
A) a whipworm. 
B) common only to the tropics and subtropics. 
C) an intestinal worm that easily contaminates fingers and fomites. 
D) often fatal in heavy infestations. 
E) All of the choices are correct.

Question 19

Amebiasis symptoms include

Accepted Answer

A) bloody, mucus-filled stools, fever, diarrhea, and weight loss. 
B) fever, swollen lymph nodes, and joint pain. 
C) urinary frequency and pain, and vaginal discharge. 
D) chills, fever, and sweating. 
E) sore throat, low-grade fever, and swollen lymph nodes. 
A) bloody, mucus-filled stools, fever, diarrhea, and weight loss. 
B) fever, swollen lymph nodes, and joint pain. 
C) urinary frequency and pain, and vaginal discharge. 
D) chills, fever, and sweating. 
E) sore throat, low-grade fever, and swollen lymph nodes.

Question 20

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

Exam 23: The Parasites of Medical Importance

A person carrying one gene for sickle-cell hemoglobin will be resistant to Plasmodium infection.

Ascaris lumbricoides

Which was the first disease found to be due to a protozoan that is introduced to humans by the bite of a hard body tick? A.Cryptosporidiosis B.Babesiosis C.Babesiosis D.Toxoplasmosis E.None of the choices are correct.

All of the following will kill Giardia, except

Write a brief definition of a parasite and parasitology giving specific examples of a fungus, protozoan, and helminth.

Schistosomiasis involves

Transmission of the pathogen of leishmaniasis is by the

An amoeba trophozoite with visible ingested RBCs that is seen in a microscopic examination of a fecal smear would likely be the pathogen _____.

Which is not correct about kala azar?

Helminth species that are hermaphroditic have separate worms that have female organs and other worms that have male organs.

The form lacking a free flagellum in the developmental stage of a hemoflagellate is called the

Plasmodium species are hemoflagellates.

Which of the following is a sexually transmitted disease?

Amebiasis is a disease of the

In temperate zones, pinworms are the most common helminth infection.

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

Giardiasis involves

Enterobius vermicularis is

Amebiasis symptoms include

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

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

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 and Disease

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

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