The cells I observed have several features in common. They all have a cell membrane that surrounds and protects their internal contents. Additionally, they all have a nucleus that contains their genetic material.
However, cells can differ from one another in terms of their shape, size, and functions. Some cells may be elongated and thin, while others may be round or cuboidal. Furthermore, some cells are specialized for specific functions, such as muscle cells for movement, nerve cells for transmitting electrical signals, and blood cells for oxygen transport.
In summary, cells share common features like the cell membrane and nucleus, but they can vary in terms of their shape, size, and specific functions.