Question 1

All of the following infections can result from drinking contaminated water EXCEPT

Accepted Answer

A) Cyclospora infection. 
B) giardiasis. 
C) trichinellosis. 
D) cholera. 
E) cryptosporidiosis. 
A) Cyclospora infection. 
B) giardiasis. 
C) trichinellosis. 
D) cholera. 
E) cryptosporidiosis.

Question 2

Which of the following organisms is shed in the feces of humans and animals,including beavers,and can contaminate water?

Accepted Answer

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

Question 3

Thorough cooking of food will prevent all of the following EXCEPT

Accepted Answer

A) trichinellosis. 
B) beef tapeworm. 
C) staphylococcal food poisoning. 
D) salmonellosis. 
E) shigellosis. 
A) trichinellosis. 
B) beef tapeworm. 
C) staphylococcal food poisoning. 
D) salmonellosis. 
E) shigellosis.

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

An outbreak of viral gastroenteritis occurs in a pediatrics ward.Rotavirus is the most likely causative agent.

Accepted Answer

A) True 
 B)False

Question 6

Approximately 30 percent of the body's immune system is located in the intestinal tract.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is mismatched?

Accepted Answer

A) Echinococcus granulosus - most benign of human tapeworm infections 
B) Taenia solium - cysticerosis 
C) trichinellosis - humans eat larva of parasite in undercooked meat 
D) pinworm infestation - humans ingest parasite's eggs 
E) hookworm infestation - heavy infections may cause pica 
A) Echinococcus granulosus - most benign of human tapeworm infections 
B) Taenia solium - cysticerosis 
C) trichinellosis - humans eat larva of parasite in undercooked meat 
D) pinworm infestation - humans ingest parasite's eggs 
E) hookworm infestation - heavy infections may cause pica

Question 8

Which of the following is included in GALT?

Accepted Answer

A) thymus 
B) Peyer's patches 
C) tonsils 
D) liver 
E) salivary glands 
A) thymus 
B) Peyer's patches 
C) tonsils 
D) liver 
E) salivary glands

Question 9

Which one of the following diseases of the gastrointestinal system is transmitted by the respiratory route?

Accepted Answer

A) staphylococcal enterotoxicosis 
B) mumps 
C) Vibrio gastroenteritis 
D) bacillary dysentery 
E) traveler's diarrhea 
A) staphylococcal enterotoxicosis 
B) mumps 
C) Vibrio gastroenteritis 
D) bacillary dysentery 
E) traveler's diarrhea

Question 10

Acute gastroenteritis that occurs after an incubation period of two to three days,persists for about a week,and commonly affects children is probably caused by

Accepted Answer

A) Giardia. 
B) rotavirus. 
C) Salmonella. 
D) Staphylococcus aureus. 
E) Trichinella. 
A) Giardia. 
B) rotavirus. 
C) Salmonella. 
D) Staphylococcus aureus. 
E) Trichinella.

Question 11

Gums bleeding while brushing one's teeth is most commonly associated with

Accepted Answer

A) halitosis. 
B) cavities. 
C) gingivitis. 
D) periodontitis. 
E) trench mouth. 
A) halitosis. 
B) cavities. 
C) gingivitis. 
D) periodontitis. 
E) trench mouth.

Question 12

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

Accepted Answer

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

Question 13

Which structure or component of the small intestine is important to antimicrobial defense?

Accepted Answer

A) salivary glands 
B) stomach acid 
C) Paneth cells 
D) gall bladder 
E) crevicular fluid 
A) salivary glands 
B) stomach acid 
C) Paneth cells 
D) gall bladder 
E) crevicular fluid

Question 14

Multiple pathovars of E.coli are well characterized.Identify four different pathogenic strains and discuss the mechanism of disease for each.

Accepted Answer

1. Enterotoxigenic E. coli (ETEC): ETEC

Question 15

Many bacterial infections of the lower digestive tract are treated with

Accepted Answer

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

Question 16

"Rice water stools" are characteristic of

Accepted Answer

A) salmonellosis. 
B) cholera. 
C) bacillary dysentery. 
D) amebic dysentery. 
E) tapeworm infestation. 
A) salmonellosis. 
B) cholera. 
C) bacillary dysentery. 
D) amebic dysentery. 
E) tapeworm infestation.

Question 17

Typhoid fever differs from salmonellosis in that in typhoid fever

Accepted Answer

A) the microorganisms multiply within macrophages. 
B) the organism is only spread in the feces of humans. 
C) the incubation period is much shorter. 
D) the organism first invades the intestinal mucosa. 
E) infection occurs due to ingestion of endospores. 
A) the microorganisms multiply within macrophages. 
B) the organism is only spread in the feces of humans. 
C) the incubation period is much shorter. 
D) the organism first invades the intestinal mucosa. 
E) infection occurs due to ingestion of endospores.

Question 18

Discuss why cholera epidemics are often associated with floods.

Accepted Answer

Cholera epidemics are often associated w

Question 19

Clostridium perfringens typically causes a self-limiting gastroenteritis.

Accepted Answer

A) True 
 B)False

Question 20

Poultry products are a likely source of infection by

Accepted Answer

A) Helicobacter pylori. 
B) Salmonella enterica. 
C) Vibrio cholerae. 
D) Shigella spp. 
E) Clostridium perfringens. 
A) Helicobacter pylori. 
B) Salmonella enterica. 
C) Vibrio cholerae. 
D) Shigella spp. 
E) Clostridium perfringens.

Exam 25: Microbial Diseases of the Digestive System

All of the following infections can result from drinking contaminated water EXCEPT

Which of the following organisms is shed in the feces of humans and animals,including beavers,and can contaminate water?

Thorough cooking of food will prevent all of the following EXCEPT

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

An outbreak of viral gastroenteritis occurs in a pediatrics ward.Rotavirus is the most likely causative agent.

Approximately 30 percent of the body's immune system is located in the intestinal tract.

Which of the following is mismatched?

Which of the following is included in GALT?

Which one of the following diseases of the gastrointestinal system is transmitted by the respiratory route?

Acute gastroenteritis that occurs after an incubation period of two to three days,persists for about a week,and commonly affects children is probably caused by

Gums bleeding while brushing one's teeth is most commonly associated with

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

Which structure or component of the small intestine is important to antimicrobial defense?

Multiple pathovars of E.coli are well characterized.Identify four different pathogenic strains and discuss the mechanism of disease for each.

Many bacterial infections of the lower digestive tract are treated with

"Rice water stools" are characteristic of

Typhoid fever differs from salmonellosis in that in typhoid fever

Discuss why cholera epidemics are often associated with floods.

Clostridium perfringens typically causes a self-limiting gastroenteritis.

Poultry products are a likely source of infection by

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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