Mic Exam 3 Practice Questions

69 Questions | By Cdtiller | Updated: Mar 20, 2022 | Attempts: 960

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Quiz questions for micro Exam 3.

Questions and Answers

1.

What virulence factor do ALL Gram-Negative Bacilli have in common?
- A.
  
  Endotoxin
- B.
  
  Exotoxins
- C.
  
  Enzymes capsules
- D.
  
  Fimbreae
2.

T/F: Gram negative bacilli cause the same types of disease..
- A.
  
  True
- B.
  
  False
3.

Which of the following are environmental niches that gram-negative bacilli occupy?
- A.
  
  Intestines
- B.
  
  Respiratory tract
- C.
  
  Soil and water
- D.
  
  All of the above
4.

Gram-negative bacilli can be zoonotic.
- A.
  
  True
- B.
  
  False
5.

Which of the following is NOT a Gram-negative coccobacilli?
- A.
  
  Haemophilus influenzae
- B.
  
  Bordetella pertussis
- C.
  
  Francisella tularemia
- D.
  
  Brucella species
- E.
  
  Pasteurella multocida
- F.
  
  Clostridium perfringens
6.

All gram negative coccobacilli affect both animals and humans equally.
- A.
  
  True
- B.
  
  False
7.

Haemophilus influenzae strains can be divided into two groups based upon
- A.
  
  Their ability to produce capsules
- B.
  
  Their ability to produce endotoxins
- C.
  
  Their ability to produce exotoxins
8.

Antibodies against the capsule show that there are ____different serotypes for Encapsulated strains of Haemophilus influenzae
- A.
  
  4
- B.
  
  5
- C.
  
  6
- D.
  
  7
9.

Which strain of Haemophilus influenzae causes 90% of noninvasive respiratory tract infections
- A.
  
  Encapsulated
- B.
  
  Nonencapsulated
- C.
  
  Option 3
10.

Which encapsulated H. Influenzae serotype causes 95% of invasive disease (meaning the bacteria enters the bloodstream).
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
- E.
  
  E
11.

Which of the following virulence factors is not produced by H. influenzae
- A.
  
  Fimbriae
- B.
  
  Capsule
- C.
  
  Endotoxin
- D.
  
  Exotoxin
12.

Which virluence factor produced by H. influenzae helps respiratory tract colonization by blocking cilia clearance and Induces inflammation at site of infection
- A.
  
  Fimbriae
- B.
  
  Capsule
- C.
  
  Endotoxin
- D.
  
  Exotoxin
13.

H. . influenzae causes disease by simply being in the environment and sparking inflammation through endotoxin
- A.
  
  True
- B.
  
  False
14.

Which infection is a Systemic infection caused by H. influenza?
- A.
  
  Meningitis
- B.
  
  Sinus infection
- C.
  
  Pneumonia
- D.
  
  Diarrhea
15.

Which of the following is NOT a virulence factor produced by H. influenza?
- A.
  
  Fimbriae
- B.
  
  Capsule
- C.
  
  Endotoxin
- D.
  
  Exotoxin
16.

Haemophilus influenza is easy to grow
- A.
  
  True
- B.
  
  False
17.

Haemophilus influenza quickly invades into cells.
- A.
  
  True
- B.
  
  False
18.

For which gram-negative bacilli is a protective antibody against the capsule the key?
- A.
  
  H. influenzae
- B.
  
  B. pertussis
- C.
  
  F. tularemia
- D.
  
  P. multocida
19.

H. influenzae causes disease by simply being in the environment and sparking inflammation through endotoxin
- A.
  
  True
- B.
  
  False
20.

Which of the following is NOT a gram-negative bacilli?
- A.
  
  Haemophilus influenzae
- B.
  
  Bordetella pertussis
- C.
  
  Francisella tularemia
- D.
  
  Pasturella multocida
- E.
  
  Pseudomonas aeruginosa
21.

At what age do children begin to make their own antibody to sugars and start to make their own protection?
- A.
  
  Birth
- B.
  
  6 months
- C.
  
  2 years
- D.
  
  6 years
22.

What causes meningitis?
- A.
  
  Encapsulated strain of H. influenzae
- B.
  
  Unencapsulated strain of H. influenzae
- C.
  
  Bordatella pertussis
- D.
  
  Fransicella tularensis
23.

What are primarily caused by unencapsulated strains of H. influenzae?
- A.
  
  Meningitis
- B.
  
  Local respiratory tract infections
- C.
  
  Systemic infections
- D.
  
  Whooping cough
24.

Which of the following is NOT one of the best drugs active against almost 100 percent of H. influenzae strains?
- A.
  
  Azithromycin (macrolide)
- B.
  
  Fluoroquinolones
- C.
  
  Cephalosporin
- D.
  
  Ampicillin
25.

Which gram-negative bacilli is hard to grow like H. influenzae; however, does not specifically require X and V?
- A.
  
  Bordetella pertussis
- B.
  
  Francisella tularemia
- C.
  
  Pasturella multocida