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:
“And I shall have some peace there, for peace comes dropping slow,
Dropping from the veils of the morning to where the cricket sings;
There midnight’s all a glimmer, and noon a purple glow,
And evening full of the linnet’s wings.”
—William Butler Yeats (1865–1939)
“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)