The process by which cilia and flagella enable movement in some organisms is called cell motility. Cilia are short, hair-like structures that cover the surface of some cells, while flagella are longer, whip-like appendages. Both structures are composed of microtubules arranged in a specific pattern, enabling them to beat in coordinated waves or spins. This movement aids in locomotion for single-celled organisms, like protozoa, and helps propel fluids or particles in multicellular organisms. Studying cell motility contributes to understanding various biological processes, including development and immune responses.