Purple bacteria or purple photosynthetic bacteria are proteobacteria that are phototrophic, that is, capable of producing energy through photosynthesis. They are pigmented with bacteriochlorophyll a or b, together with various carotenoids, which give them colours ranging between purple, red, brown, and orange.
Read more about Purple Bacteria: Metabolism, History, Evolution, Taxonomy
Famous quotes containing the words purple and/or bacteria:
“When you take a light perspective, it’s easier to step back and relax when your child doesn’t walk until fifteen months, . . . is not interested in playing ball, wants to be a cheerleader, doesn’t want to be a cheerleader, has clothes strewn in the bedroom, has difficulty making friends, hates piano lessons, is awkward and shy, reads books while you are driving through the Grand Canyon, gets caught shoplifting, flunks Spanish, has orange and purple hair, or is lesbian or gay.”
—Charlotte Davis Kasl (20th century)
“To the eyes of a god, mankind must appear as a species of bacteria which multiply and become progressively virulent whenever they find themselves in a congenial culture, and whose activity diminishes until they disappear completely as soon as proper measures are taken to sterilise them.”
—Aleister Crowley (1875–1947)