00:01
So aerobic respiration consists of three important steps.
00:07
We start with glycolysis, and then we go on to the citric acid cycle, and we end with electron transfer chain paired with oxidative phosphorylation.
00:24
In glycolysis, we make atp, nadh, and 2 pyruvate.
00:32
In the tca cycle, we run those 2 pyruvate to make some atp, and more importantly we make nadh and fadh 2.
00:44
Here we run nadh and fadh 2 through the electron transport chain and we use that to generate a proton gradient used for oxidative phosphorylation to make atp.
01:00
If you remember electron transport chain, it's a series of proteins found in the inner membrane of the mitochondria, where we start with nadh and we move an electron through after converting it to nad in order to generate the proton movement through the membrane.
01:27
There has to be something on the other side to capture that electron, though, and one of the best molecules for that has to be very electronegative and like taking electrons.
01:41
So if you note from any chemistry classes you may have taken, oxygen is highly electronegative.
01:50
I believe its electron affinity value is around like 3 .6 with one of the highest electron values, affinity values being 4 .0.
01:59
So it's going to drop it into oxygen as our carrier...