The Organelle reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Organelle

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

Other related structures:

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

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

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