Final answer:
A prokaryote is a simple, single-celled organism that lacks a nucleus and most membrane-bound organelles. They divide by binary fission.
Step-by-step explanation:
A prokaryote is a simple, single-celled (unicellular) organism that lacks a nucleus and most membrane-bound organelles. Prokaryotes divide by binary fission. They have their DNA located in a central part of the cell called the nucleoid. Examples of prokaryotes include bacteria and archaea.