Prokaryote is an organism made of one cell that does not have a nucleus or other organelles covered by a membrane.
Prokaryotes have two types: Bacteria and Archaea
The DNA of a prokaryotic cell is a single tangle loop. The DNA is located in the cytoplasm.
A prokaryotic cell has a cell wall that surrounds the cell membrane. The cell wall gives structure and support to the cell.
The most common prokaryotes are bacteria (singular, bacterium)
Bacteria are the smallest known cells. These tiny organisms live almost everywhere. Some bacteria live in the soil and water.
Bacteria has no nucleus.
Bacteria has circular DNA shaped like a twisted rubber band.
Bacteria has no membrane-covered (or membrane-bound) organelles.
Bacteria has a cell wall outside the cell membrane.
Bacteria has a flagellum (plural, flagella), a tail-like structure that some bacteria use to help them move.
Archaea (singular, archaeon) and bacteria share the following characteristics: no nucleus, no membrane-bound organelles, circular DNA, and a cell wall
Archaea have some other features that no other cells have.
The cell and cell membrane of archaea are made of different substances from those of bacteria.
Some archaea live in places where no other organisms could live.
Eukaryotic cells are the largest cells. They are about 10 times larger than bacteria cells. However, you still need a microscope to see most eukaryotic cell.