A eukaryotic cell is a complex cell type found in organisms like animals, plants, fungi, and protists.
Its defining features include a distinct nucleus enclosed in a nuclear membrane, membrane-bound organelles such as mitochondria and the endoplasmic reticulum, and a cytoskeleton for structural support and intracellular transport.
Eukaryotic cells are more structurally and functionally elaborate than prokaryotic cells (like bacteria and archaea). They allow for compartmentalization of cellular processes, making them highly adaptable for various functions, from energy production to cell division and specialized functions in multicellular organisms.