Label the steps that occur in the process in the correct order by matching the following:
Water is split, providing electrons to replace those lost by PS2.
Electrons are boosted to a higher state and accepted by a membrane protein.
Electrons are passed down the ETC, creating a proton gradient that fuels the production of ATP.
Electrons leave photosystem 1 and are accepted by another protein.
Electrons passed down another ETC, which leads to the production of NADPH (energy carrier).