Temperature Classification
| Classification | Characteristics | Examples from Lab |
| Psychrophile | Growth Range: -5 to 20 C Optimum Temperature: ~10 C | Pseudomonas fluorescens* (*Actually a psychrotroph because it also grows in the mesophile range) |
| Mesophile | Growth Range: 20 to 45 C Optimum Temperature: ~37 C | Escherichia coli, Micrococcus luteus, Serratia marcescens, Saccharomyces cerevisiae |
| Thermophile | Growth Range:
45 to 80 C Optimum Temperature: ~55 C | Bacillus stearothermophilus |
| Hyperthermophile | Growth Range: Above 80 C Optimum Temperature: variable | Archea such as Pyrolobus |