Answer:
Non-Cyclic Photophosphorylation Happens in PLANTS.
Two photosystems are involved. A photon hits Photosystem II (PS II or P680). This energy is relayed to the reaction centre via accessory pigments.
A high energy electron is emitted. …meanwhile, an enzyme in PS II splits water. The oxygen is released as a byproduct. Electrons from water are used to replace those lost by PS II.
The electron excited in PS II then travels to plastoquinone (Q), then to the b6f complex (proton pump). The proton pump uses this energy to pump protons across the thylakoid membrane, from the stroma into the thylakoid space. These protons can only exit the thylakoid via ATP synthase. The flow of protons through ATP synthase is used to make ATP. Proton pump PC Fd Q NADP Reductase
• The eleotron then goes to plastocyanin (PC)and then to PS I
• Remenber, the electron has lost energy because the proton pump used it up! It is de-energized!
• A photon hits PS I (P 700). Esergy is passed from accessory pigments to reaction centre which ejects a high energy energy electron
• The de-energized electron replaces the electron lost from PS I.
Step-by-step explanation: