BSIP / JACOPIN / SCIENCE PHOTO LIBRARY BSIP / JACOPIN / SCIENCE PHOTO LIBRARY
Animal cell. Cutaway artwork of the structure of a generalised animal cell. A central nucleus (orange) with a porous membrane holds the nucleolus (yellow), inside which is the genetic material. The endoplasmic reticulum (orange, centre left) is a membrane system that synthesizes the cell's proteins and phospholipids. These are then processed by the golgi body (pink, above nucleus). The mitochondria (pink, lower right and scattered through the cell) provide energy through aerobic respiration. The centrioles (yellow tubes) help to organise the chromosomes during cell division.
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