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Author Question: Large, rectangular, anaerobic gram-positive rods have been isolated from the anaerobic culture of a ... (Read 275 times)

craiczarry

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on: Jun 25, 2018
Large, rectangular, anaerobic gram-positive rods have been isolated from the anaerobic culture of a wound due to the puncture of the patient's foot by a rusty nail. No spores were observed on Gram stain of the specimen or culture isolate.
 
  The organism produced a double zone of beta hemolysis around its colonies on reducible blood agar. This organism will also be
  A) a swarming colony. B) catalase negative.
  C) lecithinase negative. D) lipase positive.

Question 2

A pleomorphic gram-negative coccobacillus is isolated from the blood cultures of 58-year-old male who had recent dental surgery. His history is significant for rheumatic fever as a child. The organism only grows on chocolate agar.
 
  It should be tested using
  A) ALA and horse blood agar. B) X and V factors and horse blood agar.
  C) ALA. D) X and V factor disks.


cpetit11

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Reply #1 on: Jun 25, 2018
Answer to Question 1

B

Answer to Question 2

B


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