What process does the membrane or lamellae of the grana support?

Step-by-step solution

Photophosphorylation is the synthesis of ATP from ADP and inorganic phosphate in the presence of light. When the two photosystems work in a series, first PS II and then the PS I, a process called non-cyclic photo-phosphorylation occurs . The two photosystems are connected through an electron transport chain, as seen earlier – in the Z scheme. Both ATP and NADPH + H+ are synthesised by this kind of electron flow. When only PS I is functional, the electron is circulated within the photosystem and the phosphorylation