Photosystem II (PSII) and the electron transport chain

Light is absorbed by the LHC of PSII and transfered to the reaction center

Chlorophylla in the reaction center absorbs the energy and uses it to elevate electrons to a higher energy level

The energized electrons of Chla in the reaction center are transfered to an acceptor and results in an oxidized Chla

The electron at the acceptor is transfered to the electron transport chain

Under the influence of the oxidized Chla, water is split in the intrathylakoid space yielding electrons, hydrogen ions and oxygen

The electrons produced by splitting water molecules in the intrathylakoid spare are used to reduce the oxidized chlorophylla in the reaction center