How is the structure of a unicellular organism different than the structure of a multicellular organisms? How does this affect function

Since cells have specific functions and capabilities, unicellular organisms have less capabilities and more or less have one job. Functions are reduced with unicellular. Humans, for example who are multicellular, have functions for cell regeneration, clotting, nerves, etc and therefore have a longer list of functions that unicellular organisms like bacteria