Biological unit
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A biological unit is the basic building block for life in a given biosphere, usually at a planetary level. The classic example is the cell of World (and previously Earth), subdivided into eukaryotic and prokaryotic cells, both having a common origin and biochemical characteristics. These characteristics, along with general anatomy, are the main defining points that distinguish biological units from one another.
Known biological units
Cells
Cells are the main biological unit present on World, accounting for something close to 85% of life on the planet. They are distinguished by their use of DNA (a point they have in common with erdylls, vits and óóta), cell walls made of phospholipid bilayers, and the vast abundance of carbon, hydrogen, oxygen, nitrogen and phosphorus in their biochemistry. They are further subdivided into eukaryotic cells, distinguished by encased nuclei, and prokaryotic cells, whose DNA is not bound by a membrane.
Erdylls
Erdylls are the second most prevalent biological unit of World. They resemble cells quite closely and are biochemically almost indistinct, but their anatomy displays enough differences that are conducive to a separate origin. An important difference is their prominent use of Dessian elements, present in World through extensive exposure to interuniversal contacts during its early development. The two main elements in use are the adesmic elements clunium, aranine, elenine and solanium.