ROBERT BROCKSMITH / SCIENCE PHOTO LIBRARY ROBERT BROCKSMITH / SCIENCE PHOTO LIBRARY
Animal cell. Computer artwork of a section through an animal cell. At the centre is the nucleus, which contains the cell's genetic information in the form of DNA (deoxyribonucleic acid). Surrounding the nucleus is endoplasmic reticulum (ER, pink), a membrane bound organelle that is the site of lipid synthesis and the production of membrane-bound proteins. Also present are mitochondria (blue and yellow), which produce the cell's energy and golgi bodies (dark pink with vesicles budding from them) a membrane-bound organelle that modifies and packages proteins.
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