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) have a hit". Caldwell returned to the studio and came up with the final product, which included "What You Won't Do for Love". The song's horn arrangement was written and recorded by Miami arranger Mike Lewis. Caldwell wanted the song to be the sixth track on the album since he figured the Album's second track, "My Flame", which featured him playing guitar, would be the hit. However, TK Records felt confident that "What You Won't Do for Love" would be the breakout hit. When it was released to R&B radio, TK Records did its best to hide the fact that