The cell is the basic unit of life.Some organisms are made up of a single cell,like bacteria,while others are made up of trillions of cells.Human beings are made up of cells,too.Different Types of Cells There are lots of different types of cells.Each type of cell is different and performs a different function.In the human body,we have nerve cells which can be as long as from our feet to our spinal cord.Nerve cells help to transport messages around the body.We also have billions of tiny little brain cells which help us think and muscle cells which help us move around.There are many more cells in our body that help us to function and stay alive.
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