This document provides an overview of prokaryotic and eukaryotic cells. It describes that prokaryotic cells are the simplest type of cell, lacking a nucleus and having only a cell membrane. They have various shapes and reproduce asexually through binary fission. Eukaryotic cells are more complex, containing organelles like the nucleus and mitochondria. They are found in animals, plants, fungi and protists. Eukaryotic cells reproduce sexually through the formation of gametes and have a well-defined nucleus surrounded by a nuclear membrane.