Question 1

Elongation factor, a protein required for eukaryotic (transcription/translation/expression), is the cellular target of the toxin produced by Corynebacterium diphtheriae.

Accepted Answer

The answer of Elongation factor, a protein required for eukaryotic...

Question 2

Pneumocystis jiroveci infects only immunocompromised patients.

Accepted Answer

A) True 
 B)False

Question 3

When Mycobacterium tuberculosis spreads to sites such as the bone marrow and spleen it results in (disseminated/secondary/reactivated) tuberculosis.

Accepted Answer

The answer of When Mycobacterium tuberculosis spreads to sites such...

Question 4

Which of the following statements is TRUE regarding tuberculosis?

Accepted Answer

A)   It occurs only in the lungs.
B)   Several hundred cells are required for infection.
C)   It remains viable in dried aerosol droplets for up to eight months.
D)   Only virulent strains of Mycobacterium tuberculosis produce mycolic acid.
E)   The immune system is not affected by the infection.

Question 5

Describe the pathogenesis of tuberculosis, paying special attention to the characteristics of Mycobacterium tuberculosis that make it so pathogenic.

Accepted Answer

Mycobacterium tuberculosis is an extreme...

Question 6

Even though mycoplasmas pass through filters that normally trap bacteria, they are known to be bacteria, not viruses, because they

Accepted Answer

A)   contain both DNA and RNA.
B)   synthesize peptidoglycan.
C)   divide by binary fission.
D)   contain both DNA and RNA and divide by binary fission.
E)   synthesize peptidoglycan and divide by snapping division. D

Question 7

The structure indicated by the arrow connects the middle ear to what part of the respiratory system?

Accepted Answer

A)   nasal cavity
B)   larynx
C)   pharynx
D)   sinuses
E)   trachea

Question 8

The attachment protein for almost all rhinoviruses is (BCG/ICAM-1/IgA). (Be sure your answer is in uppercase letters.)

Accepted Answer

The answer of The attachment protein for almost all rhinoviruses...

Question 9

Why is immunity to the common cold so difficult to develop, either naturally or through vaccines?

Accepted Answer

The primary reason that immunity general...

Question 10

What is the primary determinant of virulence in Streptococcus pneumoniae?

Accepted Answer

A)   the presence of a particular Lancefield antigen
B)   the production of pneumolysin
C)   the presence of a polysaccharide capsule
D)   the ability to lyse red blood cells
E)   strain-specific teichoic acids in its cell wall

Question 11

Haemophilus influenzae is a common cause of sinus infections.

Accepted Answer

A) True 
 B)False  True

Question 12

The designation "group A," used to help classify Streptococcus pyogenes, refers to this bacterium's

Accepted Answer

A)   Lancefield antigen.
B)   hemolysis pattern.
C)   M protein.
D)   type of streptokinase produced.
E)   disease associations.

Question 13

Otitis media is more common in adults than children because of differences in the anatomy of the head.

Accepted Answer

A) True 
 B)False

Question 14

A young man who works on a ranch and lives in the log bunkhouse experiences sudden fever with muscle aches. A few days later he begins to cough and have difficulty breathing, and goes to an urgent care clinic. His blood pressure is low. A blood sample reveals a low platelet count. A Gram stain of a sputum sample shows only a few small bacteria present. Which of the following is the most likely infecting agent?

Accepted Answer

A)   Bacillus anthracis
B)   Hantavirus
C)   Histoplasma capsulatum
D)   influenza
E)   Mycoplasma pneumonia B

Question 15

The majority of cases of pneumonia are caused by

Accepted Answer

A)   Mycoplasma pneumoniae.
B)   Klebsiella pneumoniae.
C)   Haemophilus influenzae.
D)   Streptococcus pneumoniae.
E)   Chlamydophila pneumoniae.

Question 16

The "common cold" is so common because there of the large number of viruses that cause it.

Accepted Answer

A) True 
 B)False

Question 17

Otitis media is a bacterial infection of the (ear/pharynx/sinuses).

Accepted Answer

The answer of Otitis media is a bacterial infection of...

Question 18

A pneumonia caused by Gram-positive diplococci is known as

Accepted Answer

A)   primary atypical pneumonia.
B)   pleurisy.
C)   pneumocystic pneumonia.
D)   pneumonic plague.
E)   pneumococcal pneumonia.

Question 19

Which of the following diseases is almost diagnostic for AIDS?

Accepted Answer

A)   blastomycosis
B)   coccidioidomycosis
C)   Pneumocystis pneumonia
D)   histoplasmosis
E)   Hantavirus pulmonary syndrome

Question 20

A nursing student develops a positive reaction to the tuberculin skin test. A history reveals possible exposure to patients with tuberculosis. A sputum sample is acid-fast negative. When asked for vaccination records, the student reports that childhood vaccination records were lost when the family emigrated from a Southeast Asian country. What is the best explanation for the test results?

Accepted Answer

A)   The student has been infected with Mycobacterium tuberculosis.
B)   The student has been exposed to Mycobacterium tuberculosis.
C)   The student is not infected.
D)   The student has been exposed to Mycobacterium tuberculosis or was vaccinated with BCG vaccine.
E)   No conclusion is possible with the information provided.

Exam 22: Microbial Diseases of the Respiratory System

Elongation factor, a protein required for eukaryotic (transcription/translation/expression), is the cellular target of the toxin produced by Corynebacterium diphtheriae.

Correct Answer
verified

Pneumocystis jiroveci infects only immunocompromised patients.

Correct Answer
verified

When Mycobacterium tuberculosis spreads to sites such as the bone marrow and spleen it results in (disseminated/secondary/reactivated) tuberculosis.

Correct Answer
verified

Which of the following statements is TRUE regarding tuberculosis?

Correct Answer
verified

Describe the pathogenesis of tuberculosis, paying special attention to the characteristics of Mycobacterium tuberculosis that make it so pathogenic.

Correct Answer
verified
Mycobacterium tuberculosis is an extreme...
View Answer

Even though mycoplasmas pass through filters that normally trap bacteria, they are known to be bacteria, not viruses, because they

Correct Answer
verified
D

The structure indicated by the arrow connects the middle ear to what part of the respiratory system?

Correct Answer
verified

The attachment protein for almost all rhinoviruses is (BCG/ICAM-1/IgA). (Be sure your answer is in uppercase letters.)

Correct Answer
verified

Why is immunity to the common cold so difficult to develop, either naturally or through vaccines?

Correct Answer
verified
The primary reason that immunity general...
View Answer

What is the primary determinant of virulence in Streptococcus pneumoniae?

Correct Answer
verified

Haemophilus influenzae is a common cause of sinus infections.

Correct Answer
verified
True

The designation "group A," used to help classify Streptococcus pyogenes, refers to this bacterium's

Correct Answer
verified

Otitis media is more common in adults than children because of differences in the anatomy of the head.

Correct Answer
verified

Correct Answer
verified
B

The majority of cases of pneumonia are caused by

Correct Answer
verified

The "common cold" is so common because there of the large number of viruses that cause it.

Correct Answer
verified

Otitis media is a bacterial infection of the (ear/pharynx/sinuses).

Correct Answer
verified

A pneumonia caused by Gram-positive diplococci is known as

Correct Answer
verified

Which of the following diseases is almost diagnostic for AIDS?

Correct Answer
verified

Correct Answer
verified

Exam 22: Microbial Diseases of the Respiratory System

Elongation factor, a protein required for eukaryotic (transcription/translation/expression), is the cellular target of the toxin produced by Corynebacterium diphtheriae.

Correct AnswerverifiedShow Answer

Pneumocystis jiroveci infects only immunocompromised patients.

Correct AnswerverifiedShow Answer

When Mycobacterium tuberculosis spreads to sites such as the bone marrow and spleen it results in (disseminated/secondary/reactivated) tuberculosis.

Correct AnswerverifiedShow Answer

Which of the following statements is TRUE regarding tuberculosis?

Correct AnswerverifiedShow Answer

Describe the pathogenesis of tuberculosis, paying special attention to the characteristics of Mycobacterium tuberculosis that make it so pathogenic.

Correct AnswerverifiedMycobacterium tuberculosis is an extreme...View AnswerShow Answer

Even though mycoplasmas pass through filters that normally trap bacteria, they are known to be bacteria, not viruses, because they

Correct AnswerverifiedD

The structure indicated by the arrow connects the middle ear to what part of the respiratory system?

Correct AnswerverifiedShow Answer

The attachment protein for almost all rhinoviruses is (BCG/ICAM-1/IgA). (Be sure your answer is in uppercase letters.)

Correct AnswerverifiedShow Answer

Why is immunity to the common cold so difficult to develop, either naturally or through vaccines?

Correct AnswerverifiedThe primary reason that immunity general...View AnswerShow Answer

What is the primary determinant of virulence in Streptococcus pneumoniae?

Correct AnswerverifiedShow Answer

Haemophilus influenzae is a common cause of sinus infections.

Correct AnswerverifiedTrue

The designation "group A," used to help classify Streptococcus pyogenes, refers to this bacterium's

Correct AnswerverifiedShow Answer

Otitis media is more common in adults than children because of differences in the anatomy of the head.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedB

The majority of cases of pneumonia are caused by

Correct AnswerverifiedShow Answer

The "common cold" is so common because there of the large number of viruses that cause it.

Correct AnswerverifiedShow Answer

Otitis media is a bacterial infection of the (ear/pharynx/sinuses).

Correct AnswerverifiedShow Answer

A pneumonia caused by Gram-positive diplococci is known as

Correct AnswerverifiedShow Answer

Which of the following diseases is almost diagnostic for AIDS?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Mycobacterium tuberculosis is an extreme...
View Answer

Correct Answer
verified
D

Correct Answer
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Correct Answer
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Correct Answer
verified
The primary reason that immunity general...
View Answer

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
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B

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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