> See also: > - [[Clinically Important Bacteria]] # Bacteria [[Non-Eukaryotic Cell Cycles]] [[Environmental Factors Affecting Microbial Growth]] ## Bacterial Cell Structure [[Bacteria Cell Envelope]] ### Morphology The two broadest factors used to classify bacteria are **shape** and **arrangement**. - Arrangement by: - Plane of division - Separation or not Treponema pallidum causes syphillus **“Strepto-“** refers to a chained structure **“Staphy-”** refers to a clustered (grape-like) structure H. influenzeae does not cause the flu but can cause meningitis - Was the first organism to have its genome fully sequenced > [!summary] **Bacterial Size** > Contents > | Type | Size | Example | | --- | --- | --- | | Smallest | 0.3um | | | Average Rod | | | | Very Large | 600um | | > ### Bacterial Size The smallest known bacteria is mycoplasma Smaller cells are more effective transporters as the **surface area to volume ratio** is smaller $SA