Question 1

The organism causing giardiasis is a

Accepted Answer

A)  gram-negative spirochete. 
B)  flagellated protozoan. 
C)  retrovirus. 
D)  type of yeast. 
A)  gram-negative spirochete. 
B)  flagellated protozoan. 
C)  retrovirus. 
D)  type of yeast. B

Question 2

Hemoflagellates cause tropical diseases such as sleeping sickness and Chagas' disease that are ALL transmitted by

Accepted Answer

A)  contact with fecal contaminated soil. 
B)  contact with contaminated water. 
C)  insect vectors. 
D)  sexual contact. 
A)  contact with fecal contaminated soil. 
B)  contact with contaminated water. 
C)  insect vectors. 
D)  sexual contact. C

Question 3

Roughly half of all adults in the United States are infected with ________ but are asymptomatic.

Accepted Answer

A)  Toxoplasma gondii 
B)  Trichomoniasis vaginalis 
C)  Cryptosporidium parvum 
D)  Cyclospora cayetanensis 
A)  Toxoplasma gondii 
B)  Trichomoniasis vaginalis 
C)  Cryptosporidium parvum 
D)  Cyclospora cayetanensis A

Question 4

Trypanosoma and Leshmania species are transmitted by

Accepted Answer

A)  direct person-to-person contact. 
B)  insect vectors. 
C)  contaminated food or water. 
D)  contaminated needles and syringes. 
A)  direct person-to-person contact. 
B)  insect vectors. 
C)  contaminated food or water. 
D)  contaminated needles and syringes.

Question 5

Humans are incidental hosts for ________,thus infected humans CANNOT spread the disease.

Accepted Answer

A)  Toxoplasma gondii 
B)  Trichomoniasis vaginalis 
C)  Entamoeba histolytica 
D)  Plasmodium vivax 
A)  Toxoplasma gondii 
B)  Trichomoniasis vaginalis 
C)  Entamoeba histolytica 
D)  Plasmodium vivax

Question 6

Which of the following is the MOST common mode of transmission of parasitic infections?

Accepted Answer

A)  direct person-to-person contact 
B)  contaminated fomites 
C)  contaminated food or water 
D)  contaminated needles and syringes 
A)  direct person-to-person contact 
B)  contaminated fomites 
C)  contaminated food or water 
D)  contaminated needles and syringes

Question 7

Cryptosporidium parvum oocysts are highly resistant to

Accepted Answer

A)  heat. 
B)  filtration. 
C)  desiccation. 
D)  chlorine. 
A)  heat. 
B)  filtration. 
C)  desiccation. 
D)  chlorine.

Question 8

How does insect ecology and the life cycle of Plasmodium impact the epidemiology and pathogenesis of classic malaria?

Accepted Answer

Malaria is spread only by female Anophel

Question 9

The MOST serious types of fungal infections are

Accepted Answer

A)  subcutaneous infections. 
B)  mycotoxic infections. 
C)  systemic mycoses. 
D)  superficial mycoses. 
A)  subcutaneous infections. 
B)  mycotoxic infections. 
C)  systemic mycoses. 
D)  superficial mycoses.

Question 10

Protists that produce spores are especially difficult to kill because they contain cell membranes that are resistant to common disinfecting chemicals.

Accepted Answer

A) True 
 B)False

Question 11

With respect to their life cycles,how are fungal pathogens different than bacterial pathogens?

Accepted Answer

Some bacterial pathogens have life cycle

Question 12

MOST fungi are harmless to humans,although certain superficial infections are quite common.

Accepted Answer

A) True 
 B)False

Question 13

Systemic fungal infections are difficult to treat because active antifungal drugs cause significant host toxicity.

Accepted Answer

A) True 
 B)False

Question 14

Malaria is

Accepted Answer

A)  the most common cause of death due to infectious disease worldwide. 
B)  prevented or treated with chloroquine. 
C)  controlled by reducing the population of the mosquito vector. 
D)  the most common cause of death due to infectious disease worldwide, although it can be controlled by reducing the population of the mosquito vector and prevented or treated with chloroquine. 
A)  the most common cause of death due to infectious disease worldwide. 
B)  prevented or treated with chloroquine. 
C)  controlled by reducing the population of the mosquito vector. 
D)  the most common cause of death due to infectious disease worldwide, although it can be controlled by reducing the population of the mosquito vector and prevented or treated with chloroquine.

Question 15

ALL fungal infections can broadly be termed

Accepted Answer

A)  benign. 
B)  systemic. 
C)  superficial. 
D)  mycoses. 
A)  benign. 
B)  systemic. 
C)  superficial. 
D)  mycoses.

Question 16

Trichomoniasis vaginalis is a sexually transmitted disease that can also survive on moist surfaces and in urine for several hours.As a result,trichomoniasis

Accepted Answer

A)  is difficult to treat. 
B)  is not a good candidate for eradication. 
C)  can be spread by contact with contaminated toilet seats, sauna benches, and towels. 
D)  is more common in males. 
A)  is difficult to treat. 
B)  is not a good candidate for eradication. 
C)  can be spread by contact with contaminated toilet seats, sauna benches, and towels. 
D)  is more common in males.

Question 17

You and your friends are hiking the Appalachian trail in North Carolina.You run out of water and your friends want to fill up from a beautiful clear stream in the middle of the forest.What precautions should you take before drinking the water and why?

Accepted Answer

The most common disease that can be cont

Question 18

Giardia intestinalis and Trichomoniasis vaginalis lack ________ and have ________.

Accepted Answer

A)  a flagellum / cilia instead 
B)  mitochondria / an anaerobic metabolism 
C)  a cell wall / a rigid cell membrane 
D)  cysts / sporozoites instead 
A)  a flagellum / cilia instead 
B)  mitochondria / an anaerobic metabolism 
C)  a cell wall / a rigid cell membrane 
D)  cysts / sporozoites instead

Question 19

Giardia cysts are able to withstand

Accepted Answer

A)  chemical disinfection. 
B)  filtration. 
C)  clarification. 
D)  chemical disinfection, filtration, and clarification. 
A)  chemical disinfection. 
B)  filtration. 
C)  clarification. 
D)  chemical disinfection, filtration, and clarification.

Question 20

A common mechanism in fungal diseases is

Accepted Answer

A)  endotoxin production. 
B)  intracellular invasion. 
C)  hypersensitivity reactions. 
D)  red blood cell lysis. 
A)  endotoxin production. 
B)  intracellular invasion. 
C)  hypersensitivity reactions. 
D)  red blood cell lysis.

Exam 32: Eukaryotic Pathogens: Fungal and Parasitic Diseases

The organism causing giardiasis is a

Hemoflagellates cause tropical diseases such as sleeping sickness and Chagas' disease that are ALL transmitted by

Roughly half of all adults in the United States are infected with ________ but are asymptomatic.

Trypanosoma and Leshmania species are transmitted by

Humans are incidental hosts for ________,thus infected humans CANNOT spread the disease.

Which of the following is the MOST common mode of transmission of parasitic infections?

Cryptosporidium parvum oocysts are highly resistant to

How does insect ecology and the life cycle of Plasmodium impact the epidemiology and pathogenesis of classic malaria?

The MOST serious types of fungal infections are

Protists that produce spores are especially difficult to kill because they contain cell membranes that are resistant to common disinfecting chemicals.

With respect to their life cycles,how are fungal pathogens different than bacterial pathogens?

MOST fungi are harmless to humans,although certain superficial infections are quite common.

Systemic fungal infections are difficult to treat because active antifungal drugs cause significant host toxicity.

Malaria is

ALL fungal infections can broadly be termed

Trichomoniasis vaginalis is a sexually transmitted disease that can also survive on moist surfaces and in urine for several hours.As a result,trichomoniasis

You and your friends are hiking the Appalachian trail in North Carolina.You run out of water and your friends want to fill up from a beautiful clear stream in the middle of the forest.What precautions should you take before drinking the water and why?

Giardia intestinalis and Trichomoniasis vaginalis lack ________ and have ________.

Giardia cysts are able to withstand

A common mechanism in fungal diseases is

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viruses and Virology

Viral Genomes and Diversity

Genetics of Bacteria and Archaea

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Filters

Giardia intestinalis and Trichomoniasis vaginalis lack and have .