Biology- prokaryotes, eukaryotes & bacterial cells

Prokaryotes:

• Small cells, less than 2 micrometers
• Circular DNA 
• No nucleus (free in the cytoplasm)
• Cell wall made of polysaccharide (not cellulose or chitin)
• Few organelles and no membrae bound organelles 
• Flagella arranged into a helix and made of flagellin
• Small ribosomes (20 nanometers or less)
• …