0.1 Subcellular unit
- chloroplast
- mitochondrion
- hydrogenosome
- membrane bioenergetic system
- other organelle or intracellular compartment
0.2 Cell
- free-living prokaryotic cell
- free-living unicellular eukaryote
- differentiated cell within a multicellular organism
- dormant cell
- reproductive cell
0.3 Organism
- unicellular organism
- multicellular organism
- modular organism
- clonal organism
0.4 Collective biological system
- colony
- biofilm
- social group
- superorganism
- host–microbiome system
- symbiotic consortium
- syntrophic community
0.5 Ecological system
- population
- community
- food web
- ecosystem
- biome
- biosphere
The same entity can receive different energetic classifications at different scales. A human cell, a human organism, and the human–microbiome consortium are overlapping but energetically nonidentical systems.
0.6 Temporal state
Every energetic profile must include a time-state qualifier:
- active
- growing
- maintaining
- storing
- reproducing
- fasting
- dormant
- recovering
- senescent
- dead
- decomposing