NAPLEX (North American Pharmacist Licensure Examination) Practice Exam 2025 - Free NAPLEX Practice Questions and Study Guide

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Question: 1 / 1820

Which of the following is a gram negative coccobacillus?

Acinetobacter baumannii

Acinetobacter baumannii is a gram negative coccobacillus because it is a small, rod-shaped bacterium that has a slightly curved shape, appearing more oval or elliptical than a true bacillus.

The other options are incorrect because they are not coccobacilli.

Bordetella pertussis is a gram negative bacillus, meaning it is longer than it is wide and has a straight shape.

Moraxella catarrhalis is a gram negative diplococcus, meaning it appears in pairs or chains of spherical cells.

Escherichia coli is a gram negative bacillus, like Bordetella pertussis, it has a straight shape and is longer than it is wide.

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Bordetella pertussis

Moraxella catarrhalis

Escherichia coli

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