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A prokaryotic cell has three architectural regions: | A prokaryotic cell has three architectural regions: | ||
1) Enclosing the cell is the cell envelope | |||
2) Inside the cell is the cytoplasmic region that contains the genome (DNA), ribosomes and various sorts of inclusions. | |||
3) On the outside, flagella and pili project from the cell's surface. These are structures (not present in all prokaryotes) made of proteins that facilitate movement and communication between cells. | |||
Eukariotic cell | Eukariotic cell |