Prokaryotes

• Prokaryotes are single-celled organisms and smaller than eukaryotic cells
• Prokaryotes do not contain a nucleus or other membrane-bound organelles
• Prokaryotic cells have smaller ribosomes than eukaryotic cells
• Prokaryotic cells have a cell wall made of murein
• Prokaryotic cells have a circular strand of DNA as well as plasmids
• Prokaryotic cells can contain a capsule which is an extra layer around the cell wall which protects cells from attack
• Prokaryotic cells can contain flagellum which is attached to the cell membrane and rotates to push the cell through its environment
• Prokaryotic cells can contain short hair-like structures on the cell surface known as pili used for attaching prokaryotic cells to other cells or surfaces