Final answer:
All cells (prokaryotic and eukaryotic) share four common components: the plasma membrane, cytoplasm, DNA, and ribosomes.
Step-by-step explanation:
All cells (prokaryotic and eukaryotic) share four common components: the plasma membrane, which separates the cell from its environment; the cytoplasm, a jelly-like substance inside the cell; DNA, the genetic material of the cell; and ribosomes, which synthesize proteins.