| Property | Description |
|---|
| Metabolism | Biosynthesis, catabolism and interconverison of biomolecules |
| Biological niche | Optimal environmental conditions, hosts |
| Selfish genetic elements | Stowaways on the ship of life: introns, inteins, phage, etc. |
| Quantitative content | Counts, abundances and other metrics |
| Taxonomy | Classification of organisms from superkingdom down to species |
| Cell surface component | Objects (membranes, complexes) localized at or near the surface of cells |
| Transport | Movement of molecules across biological membranes |
| Cell motility | Chemotaxis, flagella, etc. |
| Virulence | Host range and factors associated with pathogenesis |
| DNA handling | Exchange, repair and modification of DNA |
| Cellular growth, organization and division | Morphology, intercellular structures |
| Unknown biological process | |
| Regulatory systems | |
| Response to external environment | |
| Quorum-sensing, biofilm formation, and developmental systems | |
