Cells emerged on Earth at least 3. The envelope gives rigidity to the cell and separates the interior of the cell from its environment, serving as a protective filter. The genetic material is freely found in the cytoplasm. These cells are about fifteen times origin of eukaryotic cells pdf than a typical prokaryote and can be as much as a thousand times greater in volume.
The plasma membrane resembles that of prokaryotes in function, with minor differences in the setup. Cell walls may or may not be present. Eukaryotic flagella are less complex than those of prokaryotes. This article lists these primary components of the cell, then briefly describes their function. A fluorescent image of an endothelial cell.