TLS Online TPP Program

#Question id: 10131


The detailed chemical mechanism of the oxidation of water to O2 is not yet well understood, but with structural information shows_one electron carrier, generally identified as Yz, functions between the oxygen-evolving complex and P680 to function in this region, Yz needs to have a very strong tendency to retain its electrons, this species has been identified as;

#Unit 6. System Physiology – Plant
  1. A radical formed from a tyrosine residue in the D1 protein of the PSII reaction center
  2. Formed from Aromatic amino acid residue in the D2 protein of the PSII reaction center
  3. A radical formed from a Histidine residue because of its +ve charge in the D1 protein of the PSII reaction center
  4. A radical formed from a tyrosine residue in the D2 protein of the PSII reaction center