The electron transport chain during the photosynthetic light reaction unfolds as follows:
1. Pheophytin functions as the primary electron acceptor within Photosystem II.
2. Electrons are subsequently transferred to Plastoquinone, which carries them to the Cytb6-f complex.
3. The Cytb6-f complex then facilitates the transfer of electrons to Plastocyanin, which transports them to Photosystem I.