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 Cha' Gonna Do for Me highest charting album until her 80's-era breakthrough "I Feel For You". Its popularity among jazz audiences was likely due to the inclusion of the Dizzy Gillespie composition "Night In Tunisia" with a guest appearance by Gillespie himself as well as what today would be called a 'sample' of Charlie Parker's legendary four bar alto break from his 1946 recording of the title. Khan's vocal interpretation also features lyrics written by the singer herself. This album was nominated for Best R&B Vocal Performance, Female in 1981. Two tracks from the "What Cha Gonna Do For Me" sessions were only released as