What type of cells contain membrane-bound organelles?

Eukaryotic cells are characterized by the presence of membrane-bound organelles, which distinguish them from prokaryotic cells. These organelles, such as the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus, are enclosed within membranes that compartmentalize cellular functions, allowing for more complex and efficient processes. This compartmentalization enables eukaryotic cells to perform specialized tasks and maintain distinct internal environments, which is crucial for higher-order functions and cellular organization. In contrast, prokaryotic cells lack these membrane-bound organelles, which limits their cellular complexity.