Inside E. coli: an interactive 3D prokaryote
Simbiotiks is a free biology education resource for undergraduate students. This page is a 3D model of the bacterium Escherichia coli: four envelope layers (outer membrane, peptidoglycan, periplasm, inner membrane), 1.58 mm of DNA folded into the nucleoid, and all 55,000 ribosomes. Click a part to read about it at three depths.
Compare it with a eukaryotic animal cell. Available in English, Farsi, Spanish and Chinese.
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