In oxidative phosphorylation, which chemical change converts ADP to ATP?

In oxidative phosphorylation, which structure in the inner mitochondrial membrane is directly responsible for synthesizing ATP from ADP and inorganic phosphate?

In oxidative phosphorylation during aerobic respiration, which enzyme complex directly catalyzes ATP synthesis using the proton motive force?

In oxidative phosphorylation, which enzyme directly phosphorylates ADP to form ATP using the proton-motive force across the inner mitochondrial membrane?

In oxidative phosphorylation, which process directly drives the conversion of ADP to ATP by ATP synthase?

In oxidative phosphorylation, how many electrons can NADH carry (donate to the electron transport chain)?

In oxidative phosphorylation, how many electrons does one molecule of NADH donate to Complex I (NADH dehydrogenase) of the electron transport chain?

In oxidative phosphorylation, how many electrons can one molecule of FADH2 donate to the electron transport chain?

In oxidative phosphorylation, why does $F_A{D}_2$ oxidation yield less ATP than $NADH$ oxidation?