Eukaryotes or eukaryotic cells
have a cell nucleus and organelles enclosed within membranes. Eukaryotes can be
unicellular or multicellular. Most complex life forms are eukaryotes. In
contrast, prokaryotes don’t have a nucleus and don’t have things like mitochondria
or chloroplasts. Their DNA, proteins, and metabolites swim freely in the
cytoplasm and not enclosed in organelles.
