Transcript Chapter 25 Active Lecture Questions

Active Lecture
Questions
Chapter 25
Microbial Diseases
of the Digestive
System
Copyright © 2010 Pearson Education, Inc.
All of the following can be transmitted by
recreational (i.e., swimming) water
sources except
a.
b.
c.
d.
e.
amoebic dysentery.
cholera.
giardiasis.
hepatitis B.
salmonellosis.
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
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
Gastric ulcers are caused by
a.
b.
c.
d.
e.
stomach acid.
Helicobacter pylori.
spicy food.
acidic food.
stress.
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.
b.
c.
d.
e.
Campylobacter.
Escherichia.
Salmonella.
Shigella.
Vibrio.
A cholera epidemic in Peru had all of the
following characteristics. Which one led
to the others?
a.
b.
c.
d.
e.
eating raw fish
sewage contamination of water
catching fish in contaminated water
Vibrio in fish intestine
including fish intestines with edibles
Identification of this is based on the
observation of oocysts in feces.
a.
b.
c.
d.
e.
Campylobacter
Cryptosporidium
Escherichia
Salmonella
Trichinella
Swelling around the eyes is a
characteristic disease symptom caused
by what microorganism
a.
b.
c.
d.
e.
Campylobacter
Cryptosporidium
Escherichia
Salmonella
Trichinella
Microscopic observation of a stool
sample reveals gram-negative helical
cells. This is a disease symptom of what
microorganism?
a.
b.
c.
d.
e.
Campylobacter
Cryptosporidium
Escherichia
Salmonella
Trichinella
What microbe is frequently transmitted
to humans via raw eggs.
a.
b.
c.
d.
e.
Campylobacter
Cryptosporidium
Escherichia
Salmonella
Trichinella
The accumulation of microorganisms
and their products on the teeth is called
a.
b.
c.
d.
Dental caries
Dental plaque
Dentin
Dextran
The population of microorganisms in the
large intestine is composed mostly of
a.
b.
c.
d.
Aerobes and anaerobes
Anaerobes and facultative anaerobes
Aerobes and facultative aerobes
Obligate anaerobes
Approximately how many species of
bacteria have been isolated from the
oral cavity?
a.
b.
c.
d.
50
100
500
700
Severe diarrhea accompanied by blood
or mucus is called
a.
b.
c.
d.
Food poisoning
Intoxication
Gastroenteritis
Dysentery
Bacillary dysentery is caused by
a.
b.
c.
d.
Staphylococcus
Shigella
Salmonella
Clostridium
In Bangladesh, where cholera is
common, deaths are considered
“unusual” because of
a.
b.
c.
d.
Effective sanitation methods
Antibiotics
Rehydration therapy
Vaccination
In 20–40% of men past puberty, the
mumps virus can cause
a.
b.
c.
d.
Orchitis
Liver damage
Fever
Death
Which hepatitis virus infection are health
care workers at a higher risk of
contracting than the general population?
a.
b.
c.
d.
HAV
HBV
HEV
HDV
The treatment for viral gastroenteritis,
such as an infection of norovirus, is
a.
b.
c.
d.
Antitoxins
Oral rehydration
Antibiotics
Antiviral agents
When multiple patients have similar
clinical signs and symptoms, which of
the following is most likely involved?
a.
b.
c.
d.
An enzyme
An exotoxin
An endotoxin
A mycotoxin
It is quite common to ingest aflatoxins
when one eats
a.
b.
c.
d.
Bread
Meat
Peanuts
Cheese
What organism produces cysts that
contaminate food and water and cause
dysentery?
a.
b.
c.
d.
Cyclospora cayetanensis
Giardia lamblia
Entamoeba histolytica
Aspergillus flavus
How many stages are there in the life
of typical tapeworms?
a.
b.
c.
d.
Two
Three
Four
Five
The portal of entry for the larvae of
hookworms is the
a.
b.
c.
d.
Skin
Mouth
Blood
Lymph
In what disease do the larvae not only
cause digestive problems but also may
cause pulmonary symptoms?
a.
b.
c.
d.
Hookworms
Ascariasis
Trichinellosis
Pinworms