Question

in water splitting during z scheme elwctron is used up for z scheme but what happens to o and proton.? where did thsy go and then how are they utilized by plant body?

Answer 1

Dear student,
Water splitting reaction takes place on the inner side of the membrane. So H + produced in the reaction accumulates within the lumen. During the photo-phosphorylation steps when the electron-carrier molecule passes on its electrons to the electron-carriers on the inner side of the membrane, protons are released into the inner side or the lumen of the membrane. NADP reductase enzyme is located on the stroma side of the membrane. Protons are removed from the stroma and provided to the lumen because protons are necessary for the reduction of NADP + to NADPH + H +, along with the electrons that come from the electron- acceptor located in PSI.

Regards