In Lab, a Student Observes Some Dull, Wrinkled Brown Colonies

question 31

Multiple Choice

In lab, a student observes some dull, wrinkled brown colonies growing on their agar.They gram stain the sample and observe single bacilli.Their blood agar does not reveal any hemolysis while their MSA has growth and fermentation.Using the following table and the given observations, determine which microorganism this would most likely be.

• A)E. coli
• B)Pseudomonas aeruginosa
• C)B. subtilis
• D)B. cereus

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Definitions:

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