The United Illuminating Company (UI) is a regional electric distribution company based in Orange, Connecticut.
Although generally not visible to the naked eye, organisms composed of prokaryotic cells still dominate the earth. Their collective mass is at least 10 times greater than the mass of all eukaryotes combined. Organisms composed of prokaryotic cells are classified into 2 main groups: archaea and bacteria. Archaea most closely resemble the first primitive cells on our planet.
Membranes. Most prokaryotes are bacteria, while humans, animals, plants and fungi are eukaryotes.The prokaryotic cell has only one membrane, the plasma membrane, which surrounds its cellular contents.The eukaryotic cell also has a plasma membrane, but, in addition, it is filled with many membrane-enclosed compartments.itochondria and Chloroplasts. Eukaryotes contain mitochondria or chloroplasts. Mitochondria within animal cells and chloroplasts within plant cells look like prokaryotes. Mitochondria and chloroplasts are similar in size and features to prokaryotes.