Transcript Chapter 24 Active Lecture Questions

Active Lecture
Questions
Chapter 24
Microbial Diseases
of the Respiratory
System
Copyright © 2010 Pearson Education, Inc.
A patient has fever, difficulty breathing, chest
pains, fluid in the alveoli, and a positive
tuberculin skin test. Gram-positive cocci are
isolated from the sputum. The recommended
treatment is
a.
b.
c.
d.
e.
penicillin.
antitoxin.
isoniazid.
tetracyclines.
none of the above
No bacterial pathogen can be isolated
from the sputum of a patient with
pneumonia. Antibiotic therapy has not
been successful. The next step should be
a.
b.
c.
d.
e.
culturing for Mycobacterium tuberculosis.
culturing for Mycoplasma pneumoniae.
culturing for fungi.
a change in antibiotics.
none; nothing more can be done.
Match the choices to the culture descriptions
in the next three questions.
Your culture from a pneumonia patient
appears not to have grown. You do see
colonies, however, when the plate is viewed at
100×.
a.
b.
c.
d.
e.
Chlamydophila
Coccidioides
Histoplasma
Mycobacterium
Mycoplasma
This pneumonia etiology requires cell
culture.
a.
b.
c.
d.
e.
Chlamydophila
Coccidioides
Histoplasma
Mycobacterium
Mycoplasma
Microscopic examination of a lung biopsy
shows ovoid cells in macrophages. You
suspect these are the cause of the patient’s
symptoms, but your culture grows a
filamentous organism.
a.
b.
c.
d.
e.
Chlamydophila
Coccidioides
Histoplasma
Mycobacterium
Mycoplasma
Microscopic examination of a lung biopsy
shows spherules.
a.
b.
c.
d.
e.
Chlamydophila
Coccidioides
Histoplasma
Mycobacterium
Mycoplasma
In San Francisco, ten animal health care
technicians developed pneumonia 2 weeks
after 130 goats were moved to the animal
shelter where they worked. Which of the
following is not true?
a. Diagnosis is made by a blood agar culture of
sputum.
b. The cause is Coxiella burnetii.
c. The cause is rickettsia.
d. The disease was transmitted by aerosols.
e. Diagnosis is made by complement-fixation
tests for antibodies.
Which of the following leads to all the
rest?
a.
b.
c.
d.
e.
catarrhal stage
cough
loss of cilia
mucus accumulation
trachaeal cytotoxin
What causes the formation of a
membrane across the throat?
a.
b.
c.
d.
e.
Bordetella pertussis
Corynebacterium diphtheriae
Legionella pneumophila
Mycobacterium tuberculosis
none of the above
What is resistant to destruction by
phagocytes?
a.
b.
c.
d.
e.
Bordetella pertussis
Corynebacterium diphtheriae
Legionella pneumophila
Mycobacterium tuberculosis
none of the above
Which antibodies in tears, saliva, and
mucus help protect mucosal surfaces
from many pathogens?
a.
b.
c.
d.
IgD
IgA
IgG
IgM
In the diagnosis of streptococcal
pharyngitis, the enzyme immunoassay
(EIA) tests have generally replaced
a.
b.
c.
d.
Latex indirect agglutination tests
Gram staining
Culturing
Coagulase tests
Rhinoviruses cause what percentage of
all colds?
a.
b.
c.
d.
20%
30%
40%
50%
What is the name of the toxin produced
by Bordetella pertussis that causes the
loss of cilia in the lower respiratory tract?
a.
b.
c.
d.
Tracheal cytotoxin
Pertussis toxin
Whooping cough toxin
Bordetella toxin
One of the most common causes of viral
respiratory disease in infants is
a.
b.
c.
d.
Rhinovirus
Influenza virus
Respiratory syncytial virus
Coronavirus
Which disease is seldom transmitted
from one human to another but is usually
spread by contact with bird droppings
and exudates?
a.
b.
c.
d.
Psittacosis
Pontiac fever
Melioidosis
Q fever
What was the leading infectious killer of
children in the United States until 1935?
a.
b.
c.
d.
Scarlet fever
Diphtheria
Tuberculosis
Pertussis
Which organism produces a tough
grayish membrane in the throat?
a.
b.
c.
d.
Streptococcus pneumoniae
Corynebacterium diphtheriae
Mycobacterium tuberculosis
Haemophilus influenzae
What is the reservoir for Legionella
pneumophila?
a.
b.
c.
d.
Birds
Soil
Water
Rodents
In influenza viruses, minor annual
variations in the antigenic makeup are
called
a.
b.
c.
d.
Antigenic drift
Antigenic shift
Mutation
Recombination
Currently, the influenza viruses used for
manufacturing vaccines are grown in
a.
b.
c.
d.
Petri dishes
Cell cultures
Embryonated egg cultures
Test tube slants
What allows the influenza virus to
recognize and attach to body cells before
infecting them?
a.
b.
c.
d.
Enzymes
HA spikes
Lipid bilayer
Protein coat
Several serious fungal infections affect
the lower respiratory system, mainly
because fungi
a.
b.
c.
d.
Are dimorphic
Are opportunistic
Produce spores
Produce toxic proteins
Histoplasmosis is a fungal pulmonary
disease that is rather restricted
geographically, as is
a.
b.
c.
d.
Aspergillosis
Coccidioidomycosis
Pneumocystis pneumonia
Thrush
In Pneumocystis pneumonia, the rupture
of a cyst results in the development of
a.
b.
c.
d.
Trophozoites
Merozoites
Sporozoites
Eggs