Answer: organelle

AnswerCrossword Clue
ORGANELLEMitochondrion, for one
ORGANELLESpecialized cell part
ORGANELLESpecialized part of a cell
ORGANELLECentriole or mitochondrion, e.g.
organellea specialized part of a cell that acts like an organ
organelleAny of a number of organized or specialized structures within a living cell