Microbiology Chapter 24

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Microbiology
Chapter 24
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1

The lower respiratory tract is protected by all of the following EXCEPT ________.

competition with the normal flora of the lungs.

2

Which of the following requires treatment with both antibiotics and antitoxins?

diphtheria

3

Which of the following is mismatched?

Q fever — Rickettsia

4

Which of the following causes opportunistic infections in AIDS patients?

All of the answers are correct.

5

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

coccidioidomycosis — air

6

All of the following are true of the common cold EXCEPT _______.

early treatment will drastically reduce the disease symptoms.

7

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

Mycobacterium tuberculosis

8

Which of the following is mismatched?

epiglottitis — sore throat

9

Which one of the following produces the most potent exotoxin?

Corynebacterium diphtheriae

10

The most effective means of preventing influenza is _______.

annual vaccination.

11

Which of the following is an opportunistic pathogen?

Pneumocystis

12

The primary victims of the influenza pandemic of 1918-1919 were

young adults.

13

All of the following are used as first-line drugs for treating tuberculosis EXCEPT _________.

fluoroquinolones.

14

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

Streptococcus

15

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

Coccidioides

16

Soil is a reservoir for all of the following EXCEPT

Q fever.

17

Members of the group A streptococci (GAS) cause all of the following EXCEPT ________.

epiglottitis.

18

The patient is suffocating because of an inflamed epiglottis. What is the etiology of the symptoms?

Haemophilus

19

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

Corynebacterium

20

Which of the following is mismatched?

Mycobacterium — whooping cough

21

All of the following are classified as fungi EXCEPT ________.

Mycobacterium.

22

Which of the following statements regarding tuberculosis is FALSE?

Nearly 1/3 of the world's population shows symptoms of tuberculosis.

23

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 _______.

pneumococcal pneumonia.

24

Which of the following is NOT an intracellular parasite?

Coccidioides

25

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

Mycoplasma

26

Legionella is transmitted by ________.

airborne transmission.

27

Which of the following is NOT a typical symptom of influenza?

diarrhea

28

Which of the following is mismatched?

Mycoplasma — gram-positive pleomorphic rod

29

All of the following can lead to a positive tuberculin skin test EXCEPT _________.

being near someone with tuberculosis.

30

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

tuberculosis — toxoid

31

It is common for a normal, healthy individual to carry potentially pathogenic organisms in their upper respiratory tract.

True

32

The symptoms of diphtheria are due to an exotoxin that blocks proteins synthesis in host cells.

True

33

The most common causative agent of bacterial pneumonia is Streptococcus pneumoniae.

True

34

A positive tuberculosis skin test indicates that the patient has active tuberculosis.

False

35

Vaccination with the influenza vaccine confers lifelong immunity to influenza virus.

False