The mars rover curiosity finds a living organism on the red planet. scientists would known that it is eukaryotic and not prokaryotic if it has membrane bound organelles.
There is no proof of past life has been found on mars. The environment of red planet has liquid water and may have been habitable for microorganism but habitable condition do not necessarily indicate life. Fossil traces of microscopic bacteria that live in massive marine reefs.
Prokaryotic bacteria well dined nuclei and membrane bond organelles with chromosome which is composed of single , circular ring of DNA. Eukaryotic bacteria is also membrane bounded nucleus in eukaryotes and not in bacteria. DNA is present in nucleus.
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