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Microbio Image MCQ 11-10-17
Q. A high school-aged young woman presented to her family physician with what appeared to be an acute uncomplicated UTI. She was treated with a β-lactam antimicrobial, but her symptoms persisted. E. coli was isolated from the infection, but many of the organisms appeared Gram-stain variable and rounded. The rounded forms were identified as spheroplasts . Which of the following statements about the E.coli cells shown in the microphotograph below is most characteristic of the organism observed in this infection?

[Image: 2mVkUsy.png]

a. They are commonly referred to as endospores
b. They are osmotically stable
c. They resulted from treatment with the β-lactam antibiotics
d. They have formed cell walls.

Answer & Explanation
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