Answer: Prokaryotes have no nucleus Eukaryotes do. Also, Prokaryotes are smaller than Eukaryotes and they have simple structures. Eukaryotes have cell membranes, cytoplasm, and ribosomes, some have cell walls. Prokaryotes have no internal organelles, cytoplasm, nucleoid, ribosomes, flagella, cell membranes, and cell walls.
Explanation: Remeber: PROkaryote pro rimes with no so, no nucleus and EUkaryotes euk rimes with do so, they do have a nucleus. If you would like a full differences please find the picture attached