In-depth ETC + Chemiosmosis

what is the ETC?

Chain of 4 proteins in the inner membrane of the mitochondria mobile electron carrier proteins

Step !

NADH and FADH2 drop off the high potential energy electrons they have been carrying since glycolysis at the electron transport chain. They are both then oxidized into NAD+ and FAD and are recycled back to glycolysis.

Step 2

Electrons move through the electron transport chain with the help of O2 which pulls them through

Step 3

As the electrons move through the chain, the hydrogen ions move from a [LOW] (in matrix) -> [HIGH](in inner-membrane). The electrons give energy to the proteins to move the H+ through.

Step 4

Electrons go to O2 after moving through the electron transport chain, allowing for a reduction of O2->H2O

Step 5

Chemiosmosis: ATP synthase (building ATP) uses the concentration gradient, that contains lots of high potential energy and was created from the hydrogen bonds, to move the H+ from [HIGH] -> [LOW].