Final answer:
All prokaryotic cells have four common structures: the plasma membrane, ribosomes, cytoplasm, and nucleic acid.
Step-by-step explanation:
All prokaryotic cells have four structures in common:
- The plasma membrane surrounds the cell and separates it from its environment.
- Ribosomes are the sites where proteins are made.
- The cytoplasm is the jelly-like substance inside the cell.
- The nucleic acid contains the genetic material of the cell.
These structures are found in all prokaryotic cells, regardless of their specific functions or shapes. Other structures, such as cell walls and plasmids, may also be present in some prokaryotic cells but not all.