| Animalia | DNA | gene | organism |
| Archaea | domain | genus | photosynthesis |
| atom | double helix | helix | phylum |
| autotroph | dynamic | hereditary variation | Plantae |
| Bacteria | ecosystem | heterotroph | population |
| biological system | embryo | kingdom | positive feedback |
| biosphere | emergent property | living | producer |
| catalysis | energy | membrane | product |
| catalyst | energy processing | molecule | prokaryote |
| cell | energy transformation | multicellular | Protista |
| chemosynthesis | environmental response | natural selection | reactant |
| cilium | enzyme | negative feedback | regulation |
| class | Eukarya | non-living | reproduction |
| community | eukaryote | nucleotide | reproductive success |
| competition | evolution | nucleus | species |
| consumer | evolutionary adaptation | order | static |
| cytoplasm | family | order | structural hierarchy |
| dead | feedback | organ | taxonomy |
| deoxyribonucleic acid | feedback regulation | organ system | tissue |
| descent with modification | Fungi | organelle | unicellular |
| development |