Certified Surgical Technologist (CST) Practice Exam

Question: 1 / 400

Which term describes a rod-shaped microorganism?

Coccus

Spirillum

Bacillus

The term that describes a rod-shaped microorganism is "Bacillus." In microbiology, bacteria are often classified based on their shape, and bacilli are characterized by their elongated, cylindrical appearance, resembling rods. This morphological classification is essential for identifying different types of bacteria and understanding their potential role in infections, their modes of reproduction, and their behaviors in various environments.

Cocci, on the other hand, refer to spherical-shaped bacteria, while spirillum describes bacteria that have a spiral shape. The term helical can refer to structures with a twisted or spiral form but does not specifically denote a microorganism shape, making bacillus the most accurate choice in this context. Understanding these distinctions is crucial for anyone studying microbiology or working in fields like surgical technology, as it helps in identification and treatment of bacterial infections.

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