Question

Most organisms can be divided into two categories - prokaryotes and eukaryotes. What is the main difference between these two categories?

Answer 1

The differences between Prokaryotes cells & Eukaryotes cells are this: Eukaryotic cells have membrane-bound organelles, like the nucleus, and the Prokaryotic cells don't.
Prokaryotic cells have mitochondria and chloroplasts, also a cell wall, and the structure of a chromosomal DNA.

Answer 2

To kind of dumb it down, Prokaryotic cells are stuff like plants, while Eukaryotic cells are stuff like animals.