Cilia and flagella are cell surface structures that are adapted for movement, not respiration.

* Cilia are short, hair-like projections that beat in a coordinated way to move fluids or particles past the cell.

* Flagella are longer, whip-like structures that propel the cell through its environment.

Respiration is the process of converting food into energy, and this occurs within the cell's mitochondria, not on the cell surface.