* Cilia are short, hair-like projections that beat rhythmically to move fluid or particles past the cell. They are found in many types of cells, including those lining the respiratory tract, where they help to move mucus and debris.
* Flagella are longer, whip-like projections that propel cells through their environment. They are typically found in single-celled organisms like bacteria and sperm cells.
Both cilia and flagella are composed of microtubules, which are protein filaments that form the cytoskeleton. The microtubules are arranged in a specific pattern within cilia and flagella, giving them their characteristic shape and movement.
