A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a prolongation or process extending from a cell, e.g. a flagellum or axon.
cellular anatomical entity morphogenesis +
cellular component assembly +
cellular component disassembly +
cellular component maintenance +
chromatin organization +
cilium attachment to cell body
cytoplasm organization +
endomembrane system organization +
external encapsulating structure organization +
extracellular structure organization +
membrane organization +
microtubule organizing center attachment site organization