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
Liquid Liquid into the studio EP's. Liquid Liquid Liquid Liquid is an American no wave and dance-punk group, originally active from 1980 to 1983. They are best known for their track "Cavern," which was covered by the Sugar Hill Records house band as the backing track for Melle Mel's old school rap classic "White Lines (Don't Do It)." The group released a series of extended plays, including the acclaimed 1983 12" EP "Optimo". In 2008, the band reformed, playing in various venues around the globe. Liquid Liquid emerged from downtown New York's no wave scene. The group's original records were pressed in