Micro-Bacteria

8 Questions | By Elgreenstein | Updated: Jan 11, 2013 | Attempts: 135

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This quiz is about micro. I hope I know this!

Questions and Answers

1.

Which of the following is UNLIKE the others in terms of the mechanism of action as an enterobacteria?
- A.
  
  Vibrio Cholera
- B.
  
  EIEC
- C.
  
  ETEC
- D.
  
  Bacillus Cereus
Correct Answer
B. EIEC

Explanation
EIEC has a shiga like toxin that invades the intestinal epithelium. Vibrio Cholera, Bacillus Cereus, and ETEC use enterotoxins to increase fluid excretion by increasing adenyl cyclase production.

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2.

Both Staph Aureus and Strep Pyogenes have this virulence factor which allows for the breakdown of connective tissue.

Correct Answer
hyaluronidase
3.

What are two common immune complications that can after a Strep Pyogenes infection? Explain the pathogenesis of both of these two conditions.
4.

Clostridium Tetani and Clostridium Botulinum have some similarities and some differences in their mechanism of action. Please describe how each causes its clinical presentation.
5.

Why has it been difficult to develop a vaccine to Neisseria Gonorrhoeae?
- A.
  
  The bug develops new,different virulence factors too rapidly for a vaccine to be up to date.
- B.
  
  Unlike Neisseria Meningitidis, N. Gonorrhoeae does not have a capsule.
- C.
  
  It has the ability of antigenic variation of outermembrane proteins even within one population.
Correct Answer
C. It has the ability of antigenic variation of outermembrane proteins even within one population.

Explanation
While B is true, it is not why there is no vaccine. See pp.544-546 in Sherris for additional information.

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6.

Which of the following is NOT Zoonotic?
- A.
  
  Shigella
- B.
  
  Salmonella enteritidis
- C.
  
  Yersinia Pestis
- D.
  
  Rickettsia Rickettsii
- E.
  
  Bacillis Anthracis
Correct Answer
A. Shigella

Explanation
B- Turtles
C- Rats
D- something in the rocky mountains. (why do we go outdoors?)
E- Herbivores, like cows and sheep.

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7.

A 22 year old graduate student at the Booth School of Buisness comes in to the SCC complaining of respiratory symptoms. Once you have determined that she is not pregnant (because, lets face it, they always think you're pregnant at the SCC) and that she likely has pneumonia, which of the pathogens below is LEAST likely to be the cause?
- A.
  
  Chlamydia Pneumonia
- B.
  
  Streptococcus Pneumoniae
- C.
  
  Mycoplasma Pneumoniae
- D.
  
  Haemophilus influenzae type B
Correct Answer
D. Haemophilus influenzae type B

Explanation
H. influenzae comes into the top three bacterial causes after the age of 40.

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8.

A patient shows up in the ER with a rash on their palms and soles. Assuming the cause isn't viral, what are the possible pathogens?

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Current Version
Jan 11, 2013

Quiz Edited by
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Apr 27, 2010

Quiz Created by
Elgreenstein

Micro-bacteria

Which of the following is UNLIKE the others in terms of the mechanism of action as an enterobacteria?

Both Staph Aureus and Strep Pyogenes have this virulence factor which allows for the breakdown of connective tissue.

What are two common immune complications that can after a Strep Pyogenes infection? Explain the pathogenesis of both of these two conditions.

Clostridium Tetani and Clostridium Botulinum have some similarities and some differences in their mechanism of action. Please describe how each causes its clinical presentation.

Why has it been difficult to develop a vaccine to Neisseria Gonorrhoeae?

Which of the following is NOT Zoonotic?

A patient shows up in the ER with a rash on their palms and soles. Assuming the cause isn't viral, what are the possible pathogens?