Which feature is not found in all cells?

Nucleus is NOT found ALL cells.

Common features of cells include the cell membrane, the cytoplasm, and the cytoskeleton. Cells also have ribosomes, which are structures where proteins are made. . Cells are classified as prokaryotes or eukaryotes.

The smallest and simplest cells are prokaryotes. A prokaryotic cell is a cell that lacks a nucleus and other internal compartments. As a group they are also among the most ancient. Fossilized prokaryotic cells have been found in rocks over 3 billion years old. A eukaryote is a cell that has a nucleus and other internal compartments, known as organelles.

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just here for the other one bc they put up with u