MICROBIOLOGY CHAPTER 24

The lower respiratory tract is protected by all of the following
EXCEPTA) competition with the normal flora of the lungs.B)
IgA antibodies.C) mucous secretions.D) the ciliary
escalator.E) alveolar macrophages.

A

Which of the following is mismatched?A) pharyngitis � sore
throatB) laryngitis � voice lossC) epiglottitis � sore
throatD) sinusitis � headache and nasal mucousE) otitis
media � earache

C

Members of the group A streptococci (GAS) cause all of the following
EXCEPTA) strep throat.B) scarlet fever.C) rheumatic
fever.D) pharyngitis.E) epiglottitis.

E

Which of the following statements about mycoplasmal pneumonia is
TRUE?A) The causative agent is a virus.B) The symptoms
resemble pneumococcal pneumonia.C) The causative agent cannot be
cultured.D) Treatment is tetracyclines.E) Annual
vaccination can prevent infection

D

Which of the following is NOT a typical symptom of influenza?A)
feverB) chillsC) headacheD) diarrheaE) muscle aches

D

Which of the following is mismatched?A) Corynebacterium �
gram-positive rodB) Mycobacterium � acid-fast rodC)
Mycoplasma � gram-positive pleomorphic rodD) Bordetella �
gram-negative pleomorphic rodE) Haemophilus � gram-negative rod

C

Which of the following microorganisms causes symptoms most like
tuberculosis?A) HistoplasmaB) CoccidioidesC)
LegionellaD) MycoplasmaE) Influenza virus

A

All of the following can lead to a positive tuberculin skin test
EXCEPTA) vaccination.B) current tuberculosis
infection.C) previous tuberculosis infection.D) immunity
to tuberculosis.E) being near someone with tuberculosis.

E

Which of the following diseases is NOT correctly matched to its
vaccine?A) tuberculosis � toxoidB) whooping cough �
heat-killed bacteriaC) diphtheria � toxoidD) influenza �
viruses grown in embryonated eggsE) pneumococcal pneumonia �
capsular polysaccharides

A

Which of the following diseases has a cutaneous form, especially in
individuals over 30 years ofage?A)
coccidioidomycosisB) diphtheriaC) legionellosisD)
scarlet feverE) psittacosis

B

Which of the following requires treatment with both antibiotics and
antitoxins?A) diphtheriaB) tuberculosisC) whooping
coughD) scarlet feverE) psittacosis

A

Which of the following is mismatched?A) epiglottitis �
HaemophilusB) Q fever � RickettsiaC) psittacosis �
ChlamydiaD) whooping cough � BordetellaE) melioidosis � Burkholderia

B

Which of the following does NOT cause otitis media?A)
Streptococcus pneumoniaeB) Haemophilus influenzaeC)
Streptococcus pyogenesD) Moraxella catarrhalisE) Coxiella burnetii

E

Which of the following causes opportunistic infections in AIDS
patients?A) PneumocystisB) AspergillusC)
RhizopusD) MucorE) All of the answers are correct.

E

Which of the following diseases is NOT correctly matched to its
reservoir?A) tuberculosis � cattleB) histoplasmosis �
soilC) psittacosis � parakeetsD) coccidioidomycosis �
airE) pneumocystis � humans

D

All of the following are true of the common cold EXCEPTA) it is
caused by rhinoviruses and coronaviruses.B) it is transmitted
via aerosols and contact.C) early treatment will drastically
reduce the disease symptoms.D) complications include laryngitis
and otitis media.E) the duration of symptoms is approximately
one week

C

Which one of the following causes a disease characterized by the
catarrhal, paroxysmal, and convalescent stages?A) Bordetella
pertussisB) Corynebacterium diphtheriaeC) Mycobacterium
tuberculosisD) Streptococcus pyogenesE) respiratory
syncytial virus

A

Which one of the following is an irregular, gram-positive
rod?A) Bordetella pertussisB) Corynebacterium
diphtheriaeC) Burkholderia pseudomalleiD) Streptococcus
pyogenesE) Pneumocystis jirovecii

B

Infection by which of the following results in the formation of Ghon
complexes?A) Bordetella pertussisB) Corynebacterium
diphtheriaeC) Mycobacterium tuberculosisD) Streptococcus
pyogenesE) Blastomyces dermatidis

C

Which one of the following produces the most potent exotoxin?A)
Bordetella pertussisB) Corynebacterium diphtheriaeC)
Mycobacterium tuberculosisD) Streptococcus pyogenesE)
Streptococcus pneumoniae

B

The most effective means of preventing influenza isA) annual
vaccination.B) isolation of carriers.C) vector
control.D) pasteurization of milk.E) administration of amantadine.

A

Which of the following is an opportunistic pathogen?A)
PneumocystisB) LegionellaC) HistoplasmaD)
MycoplasmaE) rhinovirus

A

Which of the following etiologic agents results in the formation of
abscesses?A) StaphylococcusB) MycoplasmaC)
StreptococcusD) BlastomycesE) Coccidioides

D

The primary victims of the influenza pandemic of 1918-1919
wereA) members of the military.B) infants and the
elderly.C) residents of Spain; therefore, it was known as the
�Spanish Flu.�D) young adults.E) residents of the U.S.

D

All of the following are used as first-line drugs for treating
tuberculosis EXCEPTA) ethambutol.B) isoniazid.C)
fluoroquinolones.D) rifampin.E) pyrazinamide.

C

Infection by which of the following is often confused with viral
pneumonia?A) BlastomycesB) CoccidioidesC)
MycoplasmaD) StreptococcusE) Mycobacterium

C

Which one of the following causes a disease characterized by a red
rash?A) BlastomycesB) CoccidioidesC)
MycoplasmaD) StreptococcusE) RSV

D

Inhalation of arthroconidia is responsible for infection by which of
the following organisms?A) BlastomycesB)
CoccidioidesC) MycoplasmaD) StreptococcusE) Chlamydophila

B

Soil is a reservoir for all of the following EXCEPTA) Q
fever.B) melioidosis.C) blastomycosis.D)
histoplasmosis.E) coccidioidomycosis.

A

A patient has pneumonia. Gram-negative rods are cultured on nutrient
agar from a sputumsample. The etiology isA) Burkholderia
pseudomallei.B) Chlamydophila psittaci.C) Haemophilus
influenzae.D) Legionella pneumophila.E) Staphylococcus aureus.

A

The patient is suffocating because of an inflamed epiglottis. What is
the etiology of the symptoms?A) CorynebacteriumB)
HaemophilusC) BordetellaD) MycobacteriumE) RSV

B

The patient has a sore throat. What is the etiology of the
symptoms?A) CorynebacteriumB) RhinovirusC)
BordetellaD) StreptococcusE) The answer cannot be
determined based on the information provided.

E

The patient is suffocating because of the accumulation of dead tissue
and fibrin in her throat.What is the etiology of the
symptoms?A) CorynebacteriumB) HaemophilusC)
BordetellaD) MycobacteriumE) The answer cannot be
determined based on the information provided.

A

Which of the following is mismatched?A) Burkholderia �
melioidosisB) Coxiella � Q feverC) Mycoplasma � walking
pneumoniaD) Chlamydophila � psittacosisE) Mycobacterium �
whooping cough

E

All of the following are classified as fungi EXCEPTA)
Blastomyces.B) Coccidioides.C) Histoplasma.D)
Mycobacterium.E) Pneumocystis

D

Microscopic examination of a lung biopsy shows thick-walled cysts.
What is the etiology of the symptoms?A) BlastomycesB)
CoccidioidesC) HistoplasmaD) MycobacteriumE) Pneumocystis

E

Microscopic examination of a lung biopsy shows spherules. What is the
etiology of the symptoms?A) BlastomycesB)
CoccidioidesC) HistoplasmaD) MycobacteriumE) Pneum

B

Which of the following statements regarding tuberculosis is
FALSE?A) Nearly 1/3 of the world�s population is infected with
tuberculosis.B) Nearly 1/3 of the world�s population shows
symptoms of tuberculosis.C) It is responsible for nearly 2
million deaths per year.D) At least 1/3 of those who are
TB-positive are also HIV-positive.E) Treatment requires at least
six months of antibiotic therapy.Answer: B

B

A patient has a paroxysmal cough and mucus accumulation. What is the
etiology of the symptoms?A) BordetellaB)
CorynebacteriumC) BurkholderiaD) MycobacteriumE) Mycoplasma

A

A patient who presents with red throat and tonsils can be diagnosed
as havingA) streptococcal pharyngitis.B) scarlet
fever.C) diphtheria.D) the common cold.E) The answer
cannot be determined based on the information provided.

E

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 patient most likely hasA)
tuberculosis.B) influenza.C) pneumococcal
pneumonia.D) mycoplasmal pneumonia.E) the common cold.

C

Which of the following is NOT an intracellular parasite?A)
ChlamydophilaB) CoccidioidesC) CoxiellaD) Influenza
virusE) RSV

B

Which of the following is responsible for epidemics of respiratory
disease in infants?A) rhinovirusB) adenovirusC)
respiratory syncytial virusD) influenzaE) Mycoplasma

C

Which one of the following produces small �fried-egg� colonies on
medium containing horse serum and yeast extract?A)
ChlamydophilaB) LegionellaC) MycobacteriumD)
MycoplasmaE) Streptococcus

D

Legionella is transmitted byA) airborne transmission.B)
foodborne transmission.C) person-to-person contact.D)
fomites.E) vectors.

A