has part has part has_part cilium or flagellum-dependent cell motility cilium movement cilium-dependent cell motility Note that we deem eukaryotic cilia and microtubule-based flagella to be equivalent. cilium cell motility GO:0060285 biological_process ciliary cell motility Cell motility due to the motion of one or more eukaryotic cilia. A eukaryotic cilium is a specialized organelle that consists of a filiform extrusion of the cell surface. Each cilium is bounded by an extrusion of the cytoplasmic (plasma) membrane, and contains a regular longitudinal array of microtubules, anchored basally in a centriole. microtubule-based flagellar cell motility