Question 1

Aflatoxin poisoning is associated with liver cancer.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following correctly lists the stages of tooth decay?

Accepted Answer

A)  plaque accumulation, destruction of enamel, decay in tooth pulp, advancement of decay through enamel, decay in dentin 
B)  destruction of enamel, advancement of decay through enamel, plaque accumulation, decay in dentin, decay in tooth pulp 
C)  destruction of enamel, plaque accumulation, advancement of decay through enamel, decay in dentin, decay in tooth pulp 
D)  decay in dentin, plaque accumulation, destruction of enamel, advancement of decay through enamel, decay in tooth pulp 
E)  plaque accumulation, destruction of enamel, advancement of decay through enamel, decay in dentin, decay in tooth pulp 
A)  plaque accumulation, destruction of enamel, decay in tooth pulp, advancement of decay through enamel, decay in dentin 
B)  destruction of enamel, advancement of decay through enamel, plaque accumulation, decay in dentin, decay in tooth pulp 
C)  destruction of enamel, plaque accumulation, advancement of decay through enamel, decay in dentin, decay in tooth pulp 
D)  decay in dentin, plaque accumulation, destruction of enamel, advancement of decay through enamel, decay in tooth pulp 
E)  plaque accumulation, destruction of enamel, advancement of decay through enamel, decay in dentin, decay in tooth pulp

Question 3

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

Accepted Answer

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

Question 4

Typhoid fever differs from salmonellosis in that in typhoid fever

Accepted Answer

A)  the microorganisms multiply within macrophages. 
B)  infection occurs due to ingestion of endospores. 
C)  the symptoms are due to infection of the gallbladder. 
D)  the incubation period is much longer. 
E)  infection is spread only in the feces of domesticated animals. 
A)  the microorganisms multiply within macrophages. 
B)  infection occurs due to ingestion of endospores. 
C)  the symptoms are due to infection of the gallbladder. 
D)  the incubation period is much longer. 
E)  infection is spread only in the feces of domesticated animals.

Question 5

Which of the following organisms feeds on red blood cells?

Accepted Answer

A)  Taenia spp. 
B)  Escherichia coli 
C)  Entamoeba histolytica 
D)  Giardia lamblia 
E)  Vibrio parahaemolyticus 
A)  Taenia spp. 
B)  Escherichia coli 
C)  Entamoeba histolytica 
D)  Giardia lamblia 
E)  Vibrio parahaemolyticus

Question 6

Which of the following is mismatched?

Accepted Answer

A)  beef - E. coli O157:H7 
B)  chicken - Campylobacter jejuni 
C)  eggs - Trichinella spirlais 
D)  oysters - Vibrio parahaemolyticus 
E)  custard and cream pies - Staphylococcus aureus 
A)  beef - E. coli O157:H7 
B)  chicken - Campylobacter jejuni 
C)  eggs - Trichinella spirlais 
D)  oysters - Vibrio parahaemolyticus 
E)  custard and cream pies - Staphylococcus aureus

Question 7

The most common mode of HAV transmission is

Accepted Answer

A)  contamination of food before it reaches a food service establishment. 
B)  airborne. 
C)  contamination of food during preparation. 
D)  contaminated hypodermic needles. 
E)  blood transfusion. 
A)  contamination of food before it reaches a food service establishment. 
B)  airborne. 
C)  contamination of food during preparation. 
D)  contaminated hypodermic needles. 
E)  blood transfusion.

Question 8

Dental plaque is an example of

Accepted Answer

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

Question 9

Which of the following organisms is likely to be transmitted via contaminated shrimp?

Accepted Answer

A)  Giardia lamblia 
B)  Trichinella spiralis 
C)  Staphylococcus aureus 
D)  Clostridium perfringens 
E)  Vibrio parahaemolyticus 
A)  Giardia lamblia 
B)  Trichinella spiralis 
C)  Staphylococcus aureus 
D)  Clostridium perfringens 
E)  Vibrio parahaemolyticus

Question 10

Most of the normal microbiota of the digestive system are found in the

Accepted Answer

A)  mouth. 
B)  stomach. 
C)  stomach and small intestine. 
D)  small intestine and large intestine. 
E)  accessory structures. 
A)  mouth. 
B)  stomach. 
C)  stomach and small intestine. 
D)  small intestine and large intestine. 
E)  accessory structures.

Question 11

Gastroenteritis due to ingestion of food contaminated with Staphylococcus aureus is due to intoxication by enterotoxins.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is mismatched?

Accepted Answer

A)  pinworm infestation - humans ingest parasite's eggs 
B)  hydatid disease - humans are the definitive host 
C)  trichinellosis - humans eat larva of parasite 
D)  Taenia infestation - humans are the definitive host 
E)  hookworm infestation - parasite bores through skin 
A)  pinworm infestation - humans ingest parasite's eggs 
B)  hydatid disease - humans are the definitive host 
C)  trichinellosis - humans eat larva of parasite 
D)  Taenia infestation - humans are the definitive host 
E)  hookworm infestation - parasite bores through skin

Question 13

Many bacterial infections of the lower digestive tract are treated with

Accepted Answer

A)  water and electrolytes. 
B)  antitoxin. 
C)  penicillin. 
D)  thorough cooking. 
E)  quinacrine. 
A)  water and electrolytes. 
B)  antitoxin. 
C)  penicillin. 
D)  thorough cooking. 
E)  quinacrine.

Question 14

Dental caries is also known as periodontal disease.

Accepted Answer

A) True 
 B)False

Question 15

Lactic acid, an end product of fructose fermentation, causes breakdown of tooth enamel and, eventually, cavities.

Accepted Answer

A) True 
 B)False

Question 16

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

Exam 25: Microbial Diseases of the Digestive System

Aflatoxin poisoning is associated with liver cancer.

Which of the following correctly lists the stages of tooth decay?

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

Typhoid fever differs from salmonellosis in that in typhoid fever

Which of the following organisms feeds on red blood cells?

Which of the following is mismatched?

The most common mode of HAV transmission is

Dental plaque is an example of

Which of the following organisms is likely to be transmitted via contaminated shrimp?

Most of the normal microbiota of the digestive system are found in the

Gastroenteritis due to ingestion of food contaminated with Staphylococcus aureus is due to intoxication by enterotoxins.

Which of the following is mismatched?

Many bacterial infections of the lower digestive tract are treated with

Dental caries is also known as periodontal disease.

Lactic acid, an end product of fructose fermentation, causes breakdown of tooth enamel and, eventually, cavities.

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.

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Recombinant Dna

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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