organelle organization cellular component assembly organelle assembly 2009-09-15T03:00:51Z midori The aggregation, arrangement and bonding together of a set of components to form an organelle. An organelle is an organized structure of distinctive morphology and function. Includes the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton. Excludes the plasma membrane. GO:0070925 biological_process