Remember the ETC from photosynthesis.
Those charged electrons had a number of
jobs. Remember how they were involved
in the transfer of energy. For example:
Electrons absorbed photons and were
instrumental in changing the charge of
the Inner Thylakoid Space and Stroma.
This created a tiny magnet that help to
build ATP.
Electrons absorbed ATP and were
instrumental in changing the charge of
the Inner Thylakoid Space and Stroma.
This allowed hydrogen lons to move from
the Stroma to inside the Thlakoid
membrane.