CBSPD Sterile Processing Technician Practice Exam 2025 – Complete Study Resource

Staphylococci are classified as round-shaped, or cocci, bacteria that are Gram-positive. This means that during the Gram staining procedure, they retain the crystal violet stain and appear purple under a microscope. The spherical shape of the staphylococci is a defining characteristic, and they typically grow in clusters resembling grapes. The Gram-positive classification indicates that their cell walls are thick and composed primarily of peptidoglycan, which makes them more susceptible to certain antibiotics and contributes to their identification in laboratory settings. This classification is crucial for understanding the pathogenic potential of staphylococci and their treatment options, as they can be responsible for a range of infections in humans. In contrast, other choices, such as Gram-negative organisms, rod-shaped bacteria, or Mycobacteria, do not accurately describe staphylococci.