These are primitive single-celled organisms that lack a nucleus and other membrane-bound organelles.
Bacteria and archaea are considered to be the two types of prokaryotes.
Eukaryotes
These are unicellular organisms having a distinct nucleus and other membrane-bound organelles like Golgi bodies, mitochondria, etc.
Protists, fungi, plants and animals are all eukaryotes.
Humans
The human body is composed of billions of eukaryotic cells that have a distinct nucleus and other membrane-bound organelles.
These cells are associated to form tissues and organs.
Various types of eukaryotic cells are present in the body that serve to maintain and function the human body like neurons, muscle cells, skin cells, etc.