Organelle

From Biocrawler, the free encyclopedia.

In cell biology, an organelle is one of several structures with specialized functions, suspended in the cytoplasm of a eukaryotic cell. Organelles were historically identified through the use of some form of microscopy and were also identified through the use of cell fractionation.

A few large organelles probably originated from endosymbiont bacteria:

• chloroplast
• mitochondrion

Other organelles include:

• centriole
• endoplasmic reticulum
• golgi apparatus
• lysosome
• myofibril
• plastids
• nucleus
• peroxisome
• ribosome
• vacuole
• vesicle
• melanosome
• cilium/flagellum

Other related structures:

• cytosol
• endomembrane system
• nucleosome
• microtubule
• cell membrane

See also: endosymbiotic theory.

Organelles of the cell
Chloroplast | Mitochondrion | Centriole | Endoplasmic reticulum | Golgi apparatus | Lysosome | Myofibril | Nucleus | Peroxisome | Ribosome | Vacuole | Vesicle

fr:Organite ja:細胞小器官

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