H2O is split in (hint- a specific location) that gives rise to (ions or molecules etc). One of the products, , is released into air. One of the products from (a), , is passed to Photosystem II reaction centers and energized by .
High energy electrons are passed through proteins embedded in the membrane of . These proteins together are part of the electron transport chain (ETC II). Energy from ETC is released to power (hint -an active transport) that actively moves against its concentration gradient.
The built-up (hint -an ion) concentration gradient (from c.) is a form of energy. This energy is converted to kinetic energy as (hint – an ion) flows through this special channel protein, called , following its concentration gradient. Furthermore, this kinetic energy is coupled to an endergonic reaction to convert (hint – molecules with lower energy) to (molecules with higher energy). This process of harnessing H+ gradient to produce ATP is called .
A similar process takes electrons through Photosystem I and ETC I and produce this high energy molecule .
Finally these high energy molecules, and (see d & e), from (hint- a process) in (hint – a specific location) are used to turn into during Calvin Cycle in (hint – a specific location).