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NBME 16 Answers

nbme16/Block 3/Question#17 (4.5 difficulty score)
A Gram stain is performed on a sputum ...
Outer membrane🔍

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Pink rods is describing a Gram negative bacteria, which has two membranes an outer membrane and an inner membrane (whereas Gram positives have just one thicc membrane).

Both Gram + and - bacteria have an ER, can be inhibited fluoroquinolones (though negatives > positives), both have the peptidoglycan wall (positives thicker than negatives), and either can have polysaccharide capsules.

deathcap4qt  FA2019 pg 124 +1