Question 1

Dental plaque is an example of

Accepted Answer

A) a pellicle. 
B) a biofilm. 
C) gingivitis. 
D) dentin. 
E) tooth enamel. 
A) a pellicle. 
B) a biofilm. 
C) gingivitis. 
D) dentin. 
E) tooth enamel. B

Question 2

Which of the following statements about salmonellosis is FALSE?

Accepted Answer

A) It is a bacterial infection. 
B) Severity of disease depends on number of organisms ingested. 
C) A healthy carrier state exists. 
D) The mortality rate is high. 
E) It is often associated with poultry products. 
A) It is a bacterial infection. 
B) Severity of disease depends on number of organisms ingested. 
C) A healthy carrier state exists. 
D) The mortality rate is high. 
E) It is often associated with poultry products. D

Question 3

All of the following are eukaryotic organisms that cause diarrheal disease EXCEPT

Accepted Answer

A) Cryptosporidium. 
B) Cyclospora. 
C) Entamoeba. 
D) Giardia. 
E) Campylobacter. 
A) Cryptosporidium. 
B) Cyclospora. 
C) Entamoeba. 
D) Giardia. 
E) Campylobacter. E

Question 4

All of the following pertain to pinworm infections EXCEPT

Accepted Answer

A) transmission is typically by contact with fomites or inhalation of eggs. 
B) diagnosis is by detecting eggs on transparent tape pressed to the perianal area. 
C) all family members living with the patient must also be treated. 
D) it is most commonly transmitted by cysts in water. 
E) it is a helminth disease. 
A) transmission is typically by contact with fomites or inhalation of eggs. 
B) diagnosis is by detecting eggs on transparent tape pressed to the perianal area. 
C) all family members living with the patient must also be treated. 
D) it is most commonly transmitted by cysts in water. 
E) it is a helminth disease.

Question 5

A 38-year-old man had onset of fever,chills,nausea,and myalgia while vacationing on the Gulf of Mexico.On April 29,he had eaten raw oysters and gone wading in the warm coastal waters.On May 2,he was admitted to a hospital because of a fever of 39°C and two circular necrotic lesions on the left leg.He had a history of alcoholic liver disease.He was transferred to the ICU;therapy with antibiotics was initiated.On May 4,he died.Which of the following is the most likely cause?

Accepted Answer

A) Bacillus cereus 
B) Cyclospora cayetanensis 
C) Salmonella Typhi 
D) Vibrio vulnificus 
E) hepatitis C virus 
A) Bacillus cereus 
B) Cyclospora cayetanensis 
C) Salmonella Typhi 
D) Vibrio vulnificus 
E) hepatitis C virus

Question 6

Mary made her family's favorite cream of broccoli soup for lunch.Lunch was forgotten when her son suddenly remembered he had a soccer game at noon.The family finally returned several hours later and sat down to eat.Although Mary reheated the soup (which had been left out at room temperature while they were gone),why is this no guarantee that Mary and her family will not become sick due to food poisoning?

Accepted Answer

Reheating the soup does not guarantee th

Question 7

Which of the following organisms is likely to be transmitted via undercooked pork and horse?

Accepted Answer

A) Salmonella enterica 
B) Staphylococcus aureus 
C) Trichinella spiralis 
D) Entamoeba histolytica 
E) Shigella spp. 
A) Salmonella enterica 
B) Staphylococcus aureus 
C) Trichinella spiralis 
D) Entamoeba histolytica 
E) Shigella spp.

Question 8

Clostridium difficile-associated diarrhea is usually preceded by

Accepted Answer

A) eating contaminated food. 
B) a blood transfusion. 
C) extended use of antibiotics. 
D) improper food storage. 
E) travel to an underdeveloped country. 
A) eating contaminated food. 
B) a blood transfusion. 
C) extended use of antibiotics. 
D) improper food storage. 
E) travel to an underdeveloped country.

Question 9

A rushed homemaker prepared a stew from a large cut of beef but the family only consumed a small portion for dinner.The still-hot large pot was placed in the refrigerator overnight.The next day the stew was warmed for lunch.By the evening the entire family was suffering from varying degrees of diarrhea,abdominal cramping and nausea.You most likely suspect the culprit of this event is

Accepted Answer

A) Salmonella. 
B) H)pylori. 
C) Shigella. 
D) 
C) perfringes. 
E) 
B) cereus. 
A) Salmonella. 
B) H)pylori. 
C) Shigella. 
D) 
C) perfringes. 
E) 
B) cereus.

Question 10

The most common cause of traveler's diarrhea is

Accepted Answer

A) Shigella spp. 
B) Salmonella enterica. 
C) Giardia lamblia. 
D) Escherichia coli. 
E) Campylobacter jejuni. 
A) Shigella spp. 
B) Salmonella enterica. 
C) Giardia lamblia. 
D) Escherichia coli. 
E) Campylobacter jejuni.

Question 11

Which is true of the Mumps virus?

Accepted Answer

A) It is transmitted by the fecal-oral route. 
B) It typically begins with symptoms of gastroenteritis. 
C) The portal of entry is the respiratory route. 
D) A component vaccine is part of the MMR. 
E) Male sterility occurs in 40% of infections. 
A) It is transmitted by the fecal-oral route. 
B) It typically begins with symptoms of gastroenteritis. 
C) The portal of entry is the respiratory route. 
D) A component vaccine is part of the MMR. 
E) Male sterility occurs in 40% of infections.

Question 12

Which of the following helminthic diseases is a common infestation found in the southeastern United States?

Accepted Answer

A) Enterobius vermicularis 
B) Ascaris lumbricoides 
C) Taenia saginata 
D) Trichuris trichiura 
E) Echinococcus granulosus 
A) Enterobius vermicularis 
B) Ascaris lumbricoides 
C) Taenia saginata 
D) Trichuris trichiura 
E) Echinococcus granulosus

Question 13

Thinking of a mumps infection,how do the symptoms involve the GI tract,yet lead to airborne transmission of the disease? Why isn't the disease transmitted by fecal-oral contamination instead?

Accepted Answer

Mumps infection can involve the gastroin

Question 14

Humans infected with Enterobius vermicularis may have hydatid cysts within their lungs or other organs.

Accepted Answer

A) True 
 B)False

Question 15

What is a Dane particle?

Accepted Answer

A) the chlorine-resistant virus that causes HAV 
B) the infectious virion that causes HBV 
C) the spherical particles found in serum of patients with HBV 
D) the filamentous particles that cause HAV 
E) another name for an HBV surface antigen 
A) the chlorine-resistant virus that causes HAV 
B) the infectious virion that causes HBV 
C) the spherical particles found in serum of patients with HBV 
D) the filamentous particles that cause HAV 
E) another name for an HBV surface antigen

Question 16

Which of the following pertains to typhoid fever?

Accepted Answer

A) It is typically acquired via ingestion of contaminated eggs. 
B) Enterotoxin spreads via the blood. 
C) It is caused by several different species of Salmonella. 
D) Causative microorganism multiplies in patient phagocytes. 
E) It is also called bacillary dysentery. 
A) It is typically acquired via ingestion of contaminated eggs. 
B) Enterotoxin spreads via the blood. 
C) It is caused by several different species of Salmonella. 
D) Causative microorganism multiplies in patient phagocytes. 
E) It is also called bacillary dysentery.

Question 17

H.pylori is able to survive the acidic environment of the stomach as a result of adaptations that allow it to increase the pH of the immediate environment.

Accepted Answer

A) True 
 B)False

Question 18

Table 25.1 $$\begin{array} { | c | c | } 
\hline \text { Food } & \text { Relative Risk } \
\hline \text { Black beans } & 0.58 \
\hline \text { Corn soup } & 0.75 \
\hline \text { Jalapeño peppers } & 34.13 \
\hline \text { Roma tomatoes } & 5.40 \
\hline
\end{array}$$
The relative risks shown in Table 25.1 were calculated for foods suspected of transmitting Salmonella. Which food is the most likely source of infection?

Accepted Answer

A)  black beans 
B)  corn soup 
C)  jalapeño peppers 
D)  roma tomatoes 
E)  The answer cannot be determined based on the information provided. 
A)  black beans 
B)  corn soup 
C)  jalapeño peppers 
D)  roma tomatoes 
E)  The answer cannot be determined based on the information provided.

Question 19

Compare the modes of transmission for hepatitis A,B,and C.

Accepted Answer

Hepatitis A is primarily transmitted thr

Question 20

Which of the following is mismatched?

Accepted Answer

A) ergot - gangrene 
B) Salmonella endotoxin - lyses red blood cells 
C) Vibrio enterotoxin - secretion of Cl⁻,K⁺,and H₂O 
D) aflatoxin - liver cancer 
E) shiga toxin - tissue destruction 
A) ergot - gangrene 
B) Salmonella endotoxin - lyses red blood cells 
C) Vibrio enterotoxin - secretion of Cl⁻,K⁺,and H₂O 
D) aflatoxin - liver cancer 
E) shiga toxin - tissue destruction

Exam 25: Microbial Diseases of the Digestive System

Dental plaque is an example of

Which of the following statements about salmonellosis is FALSE?

All of the following are eukaryotic organisms that cause diarrheal disease EXCEPT

All of the following pertain to pinworm infections EXCEPT

Which of the following organisms is likely to be transmitted via undercooked pork and horse?

Clostridium difficile-associated diarrhea is usually preceded by

The most common cause of traveler's diarrhea is

Which is true of the Mumps virus?

Which of the following helminthic diseases is a common infestation found in the southeastern United States?

Thinking of a mumps infection,how do the symptoms involve the GI tract,yet lead to airborne transmission of the disease? Why isn't the disease transmitted by fecal-oral contamination instead?

Humans infected with Enterobius vermicularis may have hydatid cysts within their lungs or other organs.

What is a Dane particle?

Which of the following pertains to typhoid fever?

H.pylori is able to survive the acidic environment of the stomach as a result of adaptations that allow it to increase the pH of the immediate environment.

Table 25.1 Food Relative Risk Black beans 0.58 Corn soup 0.75 Jalapeo peppers 34.13 Roma tomatoes 5.40 The relative risks shown in Table 25.1 were calculated for foods suspected of transmitting Salmonella. Which food is the most likely source of infection?

Compare the modes of transmission for hepatitis A,B,and C.

Which of the following is mismatched?

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, algae, protozoa, and Helminths

Viruses,viroids,and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

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