Question 1

Which of the following statements about staphylococcal food poisoning is FALSE?

Accepted Answer

A)   It can be prevented by heating foods to 50°C for 15 minutes.
B)   It can be prevented by adequate refrigeration of food.
C)   It is treated by replacing water and electrolytes.
D)   It is caused by ingesting an enterotoxin.
E)   It is characterized by rapid onset and short duration of symptoms.

Question 2

The digestive tract is essentially one long tube. The order of the structures, beginning with the mouth, is

Accepted Answer

A)   pharynx, esophagus, stomach, small intestine, large intestine.
B)   esophagus, stomach, pharynx, small intestine, large intestine.
C)   esophagus, pharynx, stomach, small intestine, large intestine.
D)   pharynx, stomach, esophagus, small intestine, large intestine.
E)   pharynx, esophagus, stomach, large intestine, small intestine.

Question 3

Helicobacter pylori can grow in the stomach because it

Accepted Answer

A)   hides in macrophages.
B)   possesses an enzyme that neutralizes HCl.
C)   invades epithelial cells.
D)   makes HCl.
E)   makes a capsule.

Question 4

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 5

Disease- causing exotoxins are produced by all of the following organisms EXCEPT

Accepted Answer

A)   Clostridium botulinum
B)   Staphylococcus aureus
C)   Shigella dysenteriae
D)   Vibrio cholerae
E)   Clostridium perfringens

Question 6

Microscopic examination of a patient's fecal culture shows spiral bacteria. The bacteria probably belong to the genus

Accepted Answer

A)   Shigella spp.
B)   Campylobacter jejuni.
C)   Salmonella typhi.
D)   Vibrio cholerae.
E)   Escherichia coli.

Question 7

In humans, beef tapeworm infestations are acquired by ingesting

Accepted Answer

A)   water contaminated with Diphyllobothrium latum eggs.
B)   cystycerci of Taenia saginata in undercooked meat.
C)   cystycerci of Taenia solium in undercooked meat.
D)   the eggs of Taenia saginata.
E)   segments of Taenia solium tapeworms.

Question 8

Bacterial intoxications differ from bacterial infections of the digestive system in that intoxications

Accepted Answer

A)   are transmitted via contaminated water.
B)   have shorter incubation times.
C)   are more severe.
D)   are treated with antibiotics.
E)   are accompanied by high fever.

Question 9

In Situation 25.1, fecal samples should be cultured for all of the following EXCEPT

Accepted Answer

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

Question 10

Which of the following statements about salmonellosis is FALSE?

Accepted Answer

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

Question 11

EHEC is a major cause of diarrhea in developing countries and may result in the death of small children.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

Clostridium difficile- associated diarrhea is usually preceded by

Accepted Answer

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

Question 14

In Situation 25.1, fecal samples were found to be negative when cultured. The next step in diagnosing the cause of illness would be

Accepted Answer

A)   to begin antibiotic therapy.
B)   muscle biopsy.
C)   blood cultures.
D)   microscopic examination of fecess for oocysts.
E)   microscopic examination of feces for viruses.

Question 15

Which of the following is included in GALT?

Accepted Answer

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

Question 16

A vaccine to provide active immunity to HBV is prepared from

Accepted Answer

A)   viruses grown in embryonated eggs.
B)   genetically modified yeast.
C)   viruses grown in tissue culture.
D)   pooled gamma globulin.
E)   viral particles in patients.

Question 17

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

Accepted Answer

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

Question 18

Aflatoxin is a(n)  _ associated with ingestion of contaminated .

Accepted Answer

A)   mycotoxin; peanuts
B)   endotoxin; peanuts
C)   enterotoxin; rye or other cereal grains
D)   mycotoxin; rye or other cereal grains
E)   enterotoxin; peanuts

Question 19

Acute gastroenteritis that occurs after an incubation period of two to three days and commonly affects children is probably caused by

Accepted Answer

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

Question 20

Epidemics related to bacterial infection of the digestive system are typically caused by

Accepted Answer

A)   biological vectors.
B)   exposure to contaminated soil.
C)   contaminated food and water.
D)   unpasteurized milk.
E)   the respiratory route.

Exam 25: Microbial Diseases of the Digestive System

Which of the following is included in GALT?

Correct Answer
verified

A vaccine to provide active immunity to HBV is prepared from

Correct Answer
verified

Epidemics related to bacterial infection of the digestive system are typically caused by

Correct Answer
verified

In humans, beef tapeworm infestations are acquired by ingesting

Correct Answer
verified

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

Correct Answer
verified

Clostridium difficile- associated diarrhea is usually preceded by

Correct Answer
verified

Acute gastroenteritis that occurs after an incubation period of two to three days and commonly affects children is probably caused by

Correct Answer
verified

Helicobacter pylori can grow in the stomach because it

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Reheating the soup does not guarantee th...
View Answer

Which of the following statements about salmonellosis is FALSE?

Correct Answer
verified

Bacterial intoxications differ from bacterial infections of the digestive system in that intoxications

Correct Answer
verified

In Situation 25.1, fecal samples should be cultured for all of the following EXCEPT

Correct Answer
verified

Aflatoxin is a(n) _ associated with ingestion of contaminated .

Correct Answer
verified

The digestive tract is essentially one long tube. The order of the structures, beginning with the mouth, is

Correct Answer
verified

Disease- causing exotoxins are produced by all of the following organisms EXCEPT

Correct Answer
verified

EHEC is a major cause of diarrhea in developing countries and may result in the death of small children.

Correct Answer
verified

In Situation 25.1, fecal samples were found to be negative when cultured. The next step in diagnosing the cause of illness would be

Correct Answer
verified

Which of the following statements about staphylococcal food poisoning is FALSE?

Correct Answer
verified

Microscopic examination of a patient's fecal culture shows spiral bacteria. The bacteria probably belong to the genus

Correct Answer
verified

Exam 25: Microbial Diseases of the Digestive System

Which of the following is included in GALT?

Correct AnswerverifiedShow Answer

A vaccine to provide active immunity to HBV is prepared from

Correct AnswerverifiedShow Answer

Epidemics related to bacterial infection of the digestive system are typically caused by

Correct AnswerverifiedShow Answer

In humans, beef tapeworm infestations are acquired by ingesting

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Clostridium difficile- associated diarrhea is usually preceded by

Correct AnswerverifiedShow Answer

Acute gastroenteritis that occurs after an incubation period of two to three days and commonly affects children is probably caused by

Correct AnswerverifiedShow Answer

Helicobacter pylori can grow in the stomach because it

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerAnswered by ExamLex AIReheating the soup does not guarantee th...View AnswerShow Answer

Which of the following statements about salmonellosis is FALSE?

Correct AnswerverifiedShow Answer

Bacterial intoxications differ from bacterial infections of the digestive system in that intoxications

Correct AnswerverifiedShow Answer

In Situation 25.1, fecal samples should be cultured for all of the following EXCEPT

Correct AnswerverifiedShow Answer

Aflatoxin is a(n) _ associated with ingestion of contaminated .

Correct AnswerverifiedShow Answer

The digestive tract is essentially one long tube. The order of the structures, beginning with the mouth, is

Correct AnswerverifiedShow Answer

Disease- causing exotoxins are produced by all of the following organisms EXCEPT

Correct AnswerverifiedShow Answer

EHEC is a major cause of diarrhea in developing countries and may result in the death of small children.

Correct AnswerverifiedShow Answer

In Situation 25.1, fecal samples were found to be negative when cultured. The next step in diagnosing the cause of illness would be

Correct AnswerverifiedShow Answer

Which of the following statements about staphylococcal food poisoning is FALSE?

Correct AnswerverifiedShow Answer

Microscopic examination of a patient's fecal culture shows spiral bacteria. The bacteria probably belong to the genus

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
Answered by ExamLex AI
Reheating the soup does not guarantee th...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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