PSI Barbering Practice Exam 2025 – All-in-One Resource to Master Your Certification!

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Staphylococci are pus-forming bacteria that grow in what kind of structure?

Clusters like bunches of grapes

Staphylococci are characterized by their growth pattern, which resembles clusters, specifically like bunches of grapes. This unique formation results from their binary fission process, where they split into two but do not separate completely, allowing them to group together. This cluster formation is significant in identifying staphylococci in a laboratory setting, as it differentiates them from other types of bacteria.

In contrast, other forms of bacterial growth include single cells, which represent solitary organisms, and chain formations, which denote a different group of bacteria known as streptococci. Spirals refer to yet another structural variant, typically associated with a distinct class of bacteria called spirochetes. Understanding these different arrangements is essential for microbiological identification and helps in diagnosing infections accurately.

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Single cells

Spirals

Chains

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