What do all cells have in common

All cells have in common -

The plasma membrane - is an outer covering that separates the cell’s interior from its surrounding environment.

Cytoplasm - consists of the jelly-like cytosol inside the cell, plus the cellular structures suspended in it. In eukaryotes, cytoplasm specifically means the region outside the nucleus but inside the plasma membrane.

DNA - is the genetic material of the cell.

Ribosomes - are molecular machines that synthesize proteins.