electron transport chain and atp yield

what must nadh and fadh2 be turned into

nad+

fad

where does the electron transport chain occur

inner membrane of mitochondria

complex 1

oxidized nadh to nad+

complex II

oxidizes fadh2 to fad

complex III

contains cytochromes which pass down the e- brought in by nadh and fadh2 down the chain by repeating reductions of fe3 and oxidation of fe 2

complex IV part 1

the pass down e- combine with H+ ions and O2 to form water

complex IV part 2

H+ ions that aren’t made into water are pumped into the inter membrane space of the mitochondria creating a H+ gradient

what is the only pathway H+ ions go

atp synthase

what happens to atp synthase when H+ passes thru

it spin and changes shape joining adp and pi to make atp

chemisomotic model

mechanical energy provided by the flow of H+ ions is store as chemical energy in the atp bond

1 nadh yield

2.5 atp

1 fadh2 yield

1.5 atp

1 glucose yield

32 atp

1 acetyl coa yield

10 atp

how many energy is stored in glucose is saved as atp

33%

where does the rest energy go

body heat