Each different cell has a different shape according to its function. Its size is also a major factor in what the cell's function is.
A nerve cell and its long extensions
These onion cells fit together perfectly, and they are well protected.
This diagram shows the parts of a sperm cell. Notice its long flagellum.
These blood cells are tiny enough that they can fit through the blood vessels in bunches.
The shape of muscle cell allows the muscle to move.
Prokaryotes and Eukaryotes
Plant and Animal Cells
Organelles and What They Do
Cellular Transport Mechanisms