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
What You Won't Do for Love (song) What You Won't Do for Love (song) "What You Won't Do for Love" is a blue-eyed soul-styled single recorded by Bobby Caldwell for his eponymous debut album (1978). It was written by Caldwell and Alfons Kettner and released in by Clouds Records domestically and by TK Records internationally. After gaining a reputation in Miami clubs as a talented musician, Caldwell was signed to an exclusive contract with TK Records in 1978 by TK Records president Henry Stone. Heading to the studio, Caldwell recorded his first album, which was given a redo after Stone felt the album was good but "didn't