Deck 24: Microbial Diseases of the Respiratory System

Question 1

Which of the following diseases is not correctly matched to its vaccine?

A) Diphtheria - toxoid
B) Influenza - viruses grown in embryonated eggs
C) Tuberculosis - toxoid
D) Whooping cough - heat- killed bacteria
E) None of the above

Answer 1

C

Question 2

A diagnosis of strep throat is confirmed by all of the following except

A) Symptoms.
B) Serological tests.
C) Hemolytic reaction.
D) Gram stain.
E) Bacitracin inhibition.

Answer 2

A

Question 3

All of the following statements about otitis media are true except

A) It is caused by rhinovirus.
B) It is a complication of tonsillitis.
C) It is caused by Staphylococcus aureus.
D) It is caused by Streptococcus pyogenes.
E) It is transmitted by swimming pool water.

Answer 3

A

Question 4

The patient is suffocating due to the accumulation of dead tissue and fibrin in her throat. What is the etiology?

A) Haemophilus
B) Can't tell
C) Mycobacterium
D) Corynebacterium
E) Bordetella

Question 5

Which one of the following produces the most potent exotoxin?

A) Mycobacterium tuberculosis
B) Streptococcus pyogenes
C) Bordetella pertussis
D) Corynebacterium diphtheriae
E) None of the above

Question 6

Legionella is transmitted by

A) Foodborne transmission.
B) Fomites.
C) Vectors.
D) Airborne transmission.
E) Person- to- person contact.

Question 7

A patient has pneumonia. Gram- negative rods are cultured on nutrient agar from a sputum sample. The etiology is

A) Burkholderia pseudomallei
B) Streptococcus pneumonia
C) Chlamydophila psittaci
D) Haemophilus influenzae
E) Legionella pneumophila

Question 8

Which one of the following causes a disease characterized by the catarrhal, paroxysmal, and convalescent stages?

A) Mycobacterium tuberculosis
B) Corynebacterium diphtheriae
C) Streptococcus pyogenes
D) Bordetella pertussis
E) None of the above

Question 9

Which one of the following is an irregular, gram- positive rod?

A) Myobacterium tuberculosis
B) Corynebacterium diptheriae
C) Streptococcus pyogenes
D) Bordetella pertussis
E) None of the above

Question 10

Infection by which of the following results in the formation of Ghon complexes?

A) Streptococcus pyogenes
B) Mycobacterium tuberculosis
C) Corynebacterium diptheriae
D) Bordetella pertussis
E) None of the above

Question 11

Which of the following microorganisms causes symptoms most like tuberculosis?

A) Histoplasma
B) Influenzavirus
C) Coccidioides
D) Legionella
E) Mycoplasma

Question 12

Which of the following etiologic agents results in the formation of abscesses?

A) Mycoplasma
B) Staphylococcus
C) Streptococcus
D) Blastomyces
E) None of the above

Question 13

Which of the following causes an infection of the respiratory system that is transmitted by the gastrointestinal route?

A) Mycobacterium tuberculosis
B) Mycoplasma pneumoniae
C) Streptococcus pyogenes
D) Streptococcus pneumoniae
E) Haemophilus influenzae

Question 14

Which of the following is most susceptible to destruction by phagocytes?

A) Influenzavirus
B) Streptococcus pneumoniae
C) Streptococcus pyogenes
D) Chlamydophila psittaci
E) All of the above

Question 15

Which of the following pairs is mismatched?

A) Psittacosis - Chlamydia
B) Whooping cough - Bordetella
C) Q fever - Rickettsia
D) Epiglottitis - Haemophilus
E) None of the above

Question 16

Which of the following is an opportunistic pathogen?

A) Pneumocystis
B) Legionella
C) Mycoplasma
D) Rhinovirus
E) Histoplasma

Question 17

Which of the following is not an intracellular parasite?

A) Influenzavirus
B) Coxiella
C) Coccidioides
D) Chlamydophila
E) RSV

Question 18

Infection by which of the following is often confused with viral pneumonia?

A) Streptococcus
B) Mycoplasma
C) Coccidioides
D) Blastomyces
E) None of the above

Question 19

Which one of the following causes a disease characterized by a red rash?

A) Mycoplasma
B) Blastomyces
C) Streptococcus
D) Coccidioides
E) None of the above

Question 20

Which of the following pairs is mismatched?

A) Coccidioides - soil
B) Psittacosis - parrots
C) Q fever - ticks
D) Pneumocystis pneumonia - nosocomial
E) None of the above

Question 21

Which of the following diseases has a cutaneous form, especially in individuals over 30 years of age?

A) Scarlet fever
B) Coccidioidomycosis
C) Legionellosis
D) Diphtheria
E) None of the above

Question 22

Microscopic examination of a lung biopsy shows thick- walled cysts. What is the etiology?

A) Mycobacterium
B) Coccidioides
C) Blastomyces
D) Histoplasma
E) Pneumocystis

Question 23

Penicillin is used to treat all of the following except

A) Diphtheria.
B) Pneumococcal pneumonia.
C) Scarlet fever.
D) Streptococcal sore throat.
E) Mycoplasmal pneumonia.

Question 24

Which of the following does not produce an exotoxin?

A) Streptococcus pygones
B) Mycobacterium tuberculosis
C) Bordetella pertussis
D) Corynebacterium diptheriae
E) None of the above

Question 25

A person can have a positive tuberculin skin test because

A) She has tuberculosis.
B) She has been vaccinated.
C) She is immune to tuberculosis.
D) She had tuberculosis.
E) All of the above.

Question 26

Which of the following causes opportunistic infections in AIDS patients?

A) Aspergillus
B) Mucor
C) Pneumocystis
D) Rhizopus
E) All of the above

Question 27

Which of the following diseases is not correctly matched to its reservoir?

A) Coccidioidomycosis - air
B) Pneumocystis - humans
C) Histoplasmosis - soil
D) Tuberculosis - cattle
E) Psittacosis - parakeets

Question 28

You are trying to identify the cause of a patient's middle ear infection. After 24 hours, there is no growth on blood agar incubated aerobically at 37°C. Your next step is to try again

A) Incubating at 25°C.
B) Using nutrient agar.
C) Incubating anaerobically.
D) Incubating at 45°C.
E) Then give up.

Question 29

Which one of the following produces small "fried- egg" colonies on medium containing horse serum- yeast extract?

A) Streptococcus
B) Mycoplasma
C) Legionella
D) Mycobacterium
E) Chlamydophila

Question 30

Which of the following diseases is not correctly matched to a virulence factor?

A) Scarlet fever - exotoxin
B) Whooping cough - endotoxin
C) Pneumococcal pneumonia - exotoxin
D) Haemophilus pneumonia - endotoxin
E) Diphtheria - exotoxin

Question 31

Inhalation of arthroconidia is responsible for infection by which of the following organisms?

A) Blastomyces
B) Streptococcus
C) Mycoplasma
D) Coccidioides
E) None of the above

Question 32

Pneumonia can be caused by all of the following except

A) Streptococcus.
B) Legionella.
C) Mycoplasma.
D) Haemophilus.
E) None of the above.

Question 33

A patient who presents with red throat and tonsils can be diagnosed as having

A) Scarlet fever.
B) Streptococcal pharyngitis.
C) Common cold.
D) Diphtheria.
E) There is insufficient information.

Question 34

Microscopic examination of a lung biopsy shows spherules. What is the etiology?

A) Mycobacterium
B) Coccidioides
C) Blastomyces
D) Pneumocystis
E) Histoplasma

Question 35

Which of the following pairs is mismatched?

A) Corynebacterium - gram- positive rod
B) Bordetella - gram- negative pleomorphic rod
C) Haemophilus - gram- negative rod
D) Mycoplasma - gram- positive pleomorphic rod
E) Mycobacterium - acid- fast rod

Question 36

A patient has a paroxysmal cough and mucus accumulation. What is the etiology of the symptoms?

A) Corynebacterium
B) Mycoplasma
C) Mycobacterium
D) Klebsiella
E) Bordetella

Question 37

The patient has a sore throat. What is the etiology?

A) Corynebacterium
B) Mycobacterium
C) Haemophilus
D) Bordetella
E) Can't tell

Question 38

Which of the following respiratory infections can be contracted by ingestion?

A) Streptococcal pharyngitis
B) Mycoplasmal pneumonia
C) Haemophilus pneumonia
D) Tuberculosis
E) Diphtheria

Question 39

A healthy carrier state exists for

A) Haemophilus influenzae.
B) Streptococcus pneumoniae.
C) Corynebacterium diphtheriae.
D) Beta- hemolytic streptococci.
E) All of the above.

Question 40

Mycoplasmal pneumonia differs from viral pneumonia in that

A) The symptoms are distinctly different.
B) Viral pneumonia is treated with tetracyclines.
C) It doesn't have any known etiologic agent.
D) It is treated with tetracyclines.
E) None of the above.

Question 41

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 has

A) Influenza.
B) Common cold.
C) Tuberculosis.
D) Pneumococcal pneumonia.
E) Mycoplasmal pneumonia.

Question 42

The patient is suffocating due to an inflamed epiglottis. What is the etiology?

A) Bordetella
B) Corynebacterium
C) Mycobacterium
D) Haemophilus
E) Can't tell

Question 43

Which one of the following organisms does not belong with the others?

A) Mycobacterium
B) Pneumocystis
C) Coccidioides
D) Histoplasma
E) Blastomyces

Question 44

Infection by which of the following begins in lungs and spreads to skin?

A) Mycobacterium
B) Histoplasma
C) Coccidioides
D) Pneumocystis
E) Blastomyces

Question 45

The recurrence of influenza epidemics is due to

A) Lack of antiviral drugs.
B) Lack of naturally acquired active immunity.
C) Antigenic shift.
D) The Guillain- Barré syndrome.
E) All of the above.