BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Color enhanced Transmission Electron Micrograph (TEM) of section of cytoplasmic bacteria in Trachelomonas; note cell walls, DNA regions, capsule outside cells. Bacteria are prokaryotes (DNA free in the cytoplasm with no nuclei or other membraned organelles such as mitochondria; DNA as a single circular molecule, not complexed with protein; sex unidirectional; small ribosomes; non cellulosic cell wall). Magnification: 30,000x.
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