Free energy and proton drives the formation of ATP molecules inside the thylakoid.
When the charge builds up inside the thylakoid, this drives the formation of ATP from free energy and proton. The hydrocarbon skeleton of PGAL is used to form fatty acids and glycerol.
PGAL are used to make energy molecules, while the remaining 10 PGAL are rearranged to form more ATP molecules.
So we can conclude that free energy, proton, fatty acids and glycerol are the correct answers for the given blanks.
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