Certification Board for Sterile Processing and Distribution (CBSPD) Sterile Processing Technician Practice Exam

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Prepare for the CBSPD Sterile Processing Technician Exam with comprehensive study materials, including flashcards and multiple-choice questions. Enhance your readiness with detailed explanations and helpful tips. Achieve success on your certification journey!

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Gram-Negative Bacilli are characterized by which shape?

Round-shaped
Coccoid
Rod-shaped
Spiral-shaped

The correct answer is: Rod-shaped

Gram-negative bacilli are characterized by their rod-shaped structure. This unique shape is pivotal in identifying and classifying bacteria, particularly in microbiology. The term "bacilli" specifically refers to rod-shaped bacteria, and the distinction as "gram-negative" indicates that these bacteria do not retain the crystal violet stain used in the Gram staining procedure, taking on a pink color instead due to the counterstain, typically safranin. In contrast, round-shaped organisms are categorized as cocci, which do not fall under the bacilli classification. Coccoid shapes refer to spherical bacteria, while spiral-shaped bacteria, termed spirilla or spirochetes, have a twisted or helical appearance. Therefore, the unique rod-shaped structure of Gram-negative bacilli is essential in diagnosing infections and understanding the organism's characteristics in clinical settings.