1. Structure: Cells can have different shapes, sizes, and internal structures depending on their function. For example, a muscle cell will have long, thin fibers to facilitate contraction, while a nerve cell will have long, branching extensions (axons and dendrites) to transmit signals.

2. Function: Cells can have specialized functions within an organism. For example, a red blood cell is responsible for carrying oxygen throughout the body, while a pancreatic cell produces digestive enzymes. These different functions are often reflected in the cell's structure.

Let me know if you would like more details on these differences or want to explore other ways cells can vary!