Photosynthesis called P680. The source of electrons for photosynthesis in green plants and cyanobacteria is water. Two water molecules are oxidized by four successive charge-separation reactions by photosystem II to yield a molecule of diatomic oxygen and four hydrogen ions. The electrons yielded are transferred to a redox-active tyrosine residue that then reduces the oxidized P680. This resets the ability of P680 to absorb another photon and release another photo-dissociated electron. The oxidation of water is catalyzed in photosystem II by a redox-active structure that contains four manganese ions and a calcium ion; this oxygen-evolving complex binds two water molecules and
Get What You Need more innocent, drunken, loutish times with a smile on the faces of everyone in your immediate vicinity" and recommended the album. "Uncut Magazine" gave a favorable review as well, remarking that its songs "inhabit the same ageless corner of garage band heaven as earlier classics". In contrast, "Blender" gave it two stars out of five—'mediocre'—and stated that "they sound more like a road-toughened bar band". Get What You Need Get What You Need is a 2003 studio album by an Irish power pop/punk rock band The Undertones. It is the band's first collection of new studio material since their reformation