1. Plasma membrane: Both cell types have a plasma membrane, which acts as a barrier between the inside and outside of the cell, regulating what enters and exits.

2. Ribosomes: Both eukaryotic and prokaryotic cells contain ribosomes, which are responsible for protein synthesis. While they differ in size and structure, both types of ribosomes perform this essential function.

3. DNA: Both cell types possess DNA, the genetic material that carries the instructions for building and maintaining the cell. However, eukaryotic DNA is found within a nucleus, while prokaryotic DNA is located in a region called the nucleoid.

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