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This activity contains 20 questions.

Question 1
1 Two days after a beach party, a 22-year-old female experiences diarrhea for three days. Her symptoms are most likely due to:
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Question 2
2 Which of the following diseases does not have symptoms due to exotoxin?
End of Question 2

Question 3
3 A positive culture of gram-negative rods from a stool sample would indicate the presence of:
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Question 4
4 Ulcers can be cured with:
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Question 5
5 Which of the following microorganisms is not usually transmitted by unpasteurized milk?
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Question 6
6 Microscopic examination of a stool sample from a patient with giardiasis should reveal:
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Question 7
7 Which of the following is not transmitted by contaminated water?
End of Question 7

Question 8
8 A man is hospitalized after experiencing seizures. A CT scan shows multiple cysts in his brain. One possible diagnosis is:
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Question 9
9 A man is hospitalized after experiencing seizures. A CT scan shows multiple cysts in his brain. A serological test shows he has antibodies against Taenia solium. This disease is acquired by ingesting:
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Question 10
10 Which of the following diseases is not characterized by nausea and diarrhea?
End of Question 10

Question 11
11 Several hours after a picnic, a 15-year-old male experiences nausea, abdominal pain, and vomiting for 24 hours. A culture from the picnic food grows gram-positive, endospore-forming rods. The etiology is:
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Question 12
12 Foods that have been cooked and cooled, but not refrigerated before consumption, are vehicles for transmission of all of the following microorganisms except which one?
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Question 13
13 Which of the following is not transmitted by fecal contamination of food or water?
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Question 14
14 Which of the following diseases has symptoms due to endotoxin production?
End of Question 14

Question 15
15 Exotoxins are not responsible for the symptoms of:
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Question 16
16 Antibiotic therapy is appropriately used to treat:
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Question 17
17 Which one of the following microorganisms does not enter through the mouth?
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Question 18
18 A vaccine is not available for:
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Question 19
19 Your microscopic examination of a stool sample reveals proglottids. What is the disease?
End of Question 19

Question 20
20 Which of the following can be identified by culturing on differential media?
End of Question 20

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