protobiont

As nouns the difference between protobiont and eukaryote

is that protobiont is an aggregation of organic molecules, surrounded by a membrane, that abiotically coalesces into resemblances of living matter; thought to be the precursors of prokaryotic cells while eukaryote is any of the single-celled or multicellular organisms, of the taxonomic domain eukaryota , whose cells contain at least one distinct nucleus.

As nouns the difference between photobiont and protobiont

is that photobiont is a photosynthetic symbiont while protobiont is an aggregation of organic molecules, surrounded by a membrane, that abiotically coalesces into resemblances of living matter; thought to be the precursors of prokaryotic cells.

As nouns the difference between protobiont and prokaryote

is that protobiont is an aggregation of organic molecules, surrounded by a membrane, that abiotically coalesces into resemblances of living matter; thought to be the precursors of prokaryotic cells while prokaryote is an organism whose cell (or cells) are characterized by the absence of a nucleus or any other membrane-bound organelles.