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
Girls Can't Do What the Guys Do 1972 studio album "See All Her Faces". Yellowman covered it for "King Yellowman" (1984). "Girls Can't Do What the Guys Do" is sampled in "Upgrade U" by Beyoncé and Jay-Z, from Beyoncé's album "B'Day" (2006) and in "No Homo Outro", a track from "Turtleneck & Chain" (2011) by The Lonely Island. Girls Can't Do What the Guys Do "Girls Can't Do What the Guys Do" is a single by American recording artist Betty Wright from her debut studio album "My First Time Around" (1968). It was written by Willie Clarke and Clarence Reid, and released in 1968 by Alston Records.