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Copyright © 2010 Pearson Education, Inc. Active Lecture Questions Chapter 25 Microbial Diseases of the Digestive System.

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Presentation on theme: "Copyright © 2010 Pearson Education, Inc. Active Lecture Questions Chapter 25 Microbial Diseases of the Digestive System."— Presentation transcript:

1 Copyright © 2010 Pearson Education, Inc. Active Lecture Questions Chapter 25 Microbial Diseases of the Digestive System

2 All of the following can be transmitted by recreational (i.e., swimming) water sources except a.amoebic dysentery. b.cholera. c.giardiasis. d. hepatitis B. e. salmonellosis.

3 A patient with nausea, vomiting, and diarrhea within 5 hours after eating most likely has a. shigellosis. b. cholera. c. E. coli gastroenteritis. d. salmonellosis. e. staphylococcal

4 Isolation of E. coli from a stool sample is diagnostic proof that the patient has a.cholera. b.E. coli gastroenteritis. c.salmonellosis. d. typhoid fever. e. none of the above

5 Gastric ulcers are caused by a.stomach acid. b.Helicobacter pylori. c.spicy food. d.acidic food. e.stress.

6 Microscopic examination of a patient’s fecal culture shows comma-shaped bacteria. These bacteria require 2–4% NaCl to grow. The bacteria probably belong to the genus a.Campylobacter. b.Escherichia. c.Salmonella. d.Shigella. e.Vibrio.

7 A cholera epidemic in Peru had all of the following characteristics. Which one led to the others? a.eating raw fish b.sewage contamination of water c.catching fish in contaminated water d.Vibrio in fish intestine e.including fish intestines with edibles

8 Identification of this is based on the observation of oocysts in feces. a.Campylobacter b.Cryptosporidium c.Escherichia d.Salmonella e.Trichinella

9 Swelling around the eyes is a characteristic disease symptom caused by what microorganism a.Campylobacter b.Cryptosporidium c.Escherichia d.Salmonella e.Trichinella

10 Microscopic observation of a stool sample reveals gram-negative helical cells. This is a disease symptom of what microorganism? a.Campylobacter b.Cryptosporidium c.Escherichia d.Salmonella e.Trichinella

11 What microbe is frequently transmitted to humans via raw eggs. a.Campylobacter b.Cryptosporidium c.Escherichia d.Salmonella e.Trichinella

12 The accumulation of microorganisms and their products on the teeth is called a.Dental caries b.Dental plaque c.Dentin d.Dextran

13 The population of microorganisms in the large intestine is composed mostly of a.Aerobes and anaerobes b.Anaerobes and facultative anaerobes c.Aerobes and facultative aerobes d.Obligate anaerobes

14 Approximately how many species of bacteria have been isolated from the oral cavity? a.50 b.100 c.500 d.700

15 Severe diarrhea accompanied by blood or mucus is called a.Food poisoning b.Intoxication c.Gastroenteritis d.Dysentery

16 Bacillary dysentery is caused by a.Staphylococcus b.Shigella c.Salmonella d.Clostridium

17 In Bangladesh, where cholera is common, deaths are considered “unusual” because of a.Effective sanitation methods b.Antibiotics c.Rehydration therapy d.Vaccination

18 In 20–40% of men past puberty, the mumps virus can cause a.Orchitis b.Liver damage c.Fever d.Death

19 Which hepatitis virus infection are health care workers at a higher risk of contracting than the general population? a. HAV b. HBV c. HEV d. HDV

20 The treatment for viral gastroenteritis, such as an infection of norovirus, is a.Antitoxins b.Oral rehydration c.Antibiotics d.Antiviral agents

21 When multiple patients have similar clinical signs and symptoms, which of the following is most likely involved? a.An enzyme b.An exotoxin c.An endotoxin d.A mycotoxin

22 It is quite common to ingest aflatoxins when one eats a.Bread b.Meat c.Peanuts d.Cheese

23 What organism produces cysts that contaminate food and water and cause dysentery? a.Cyclospora cayetanensis b.Giardia lamblia c.Entamoeba histolytica d.Aspergillus flavus

24 How many stages are there in the life of typical tapeworms? a.Two b.Three c.Four d.Five

25 The portal of entry for the larvae of hookworms is the a.Skin b.Mouth c.Blood d.Lymph

26 In what disease do the larvae not only cause digestive problems but also may cause pulmonary symptoms? a.Hookworms b.Ascariasis c.Trichinellosis d.Pinworms


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