Oxidative Phosphorylation Flashcards
Where are the electron transport complexes found
/in the inner mito cristae membrane
What happens at complex 1
- NADH has its hydrides removed
- complex 1 will take the electrons ( increases in energy ) and protons displayed into matrix
- releases electrons to complex q ( decrease in energy) and energy changes opens its pores and its pumps protons into inter membrane space
What happens at complex 2
- FADH2 drops electrons into complex 2 ( increases in energy )and protons displaced into cytosol
- complex 2 passes electrons into complex q but not pores to pump protons
Describe complex q structure and function
- it is co-enzyme A ( not protein based ) ,but can move along inner cristae membrane
- accepts electrons from complex 1 and 2 and passes them on onto complex 3
Describe complex 3 structure and function
- made of cytochrome b( has heme group and Fe attached centrally )
- accepts electrons from complex q ( increases in energy )
- releases electrons to cytochrome c and has pores so pumps electrons
What does cytochrome c do
/accepts electrons from cytochrome b and passes them on onto complex 4 ( cytochrome oxidase )
-no pores
What does complex 4 do
-accepts electrons from cytochrome c and transfers them to final electron acceptor oxygen ( 2e for each O ) and it binds to 2H+ forming water
Which part has more proton conc
-the inter membrane space
List the parts of complex 5
ATP synthetase has the following 1 actual rotor 2 rod ( connects rotor and Knob ) 3 catalytic knob 4 stator ( holds knob to membrane )
Describe the chemiosmotic theory
- protons move through stator from inter membrane end into matrix end from high to low
- rotor starts spinning and absorbs potential energy and uses it to fuse ADP and P on knob forming ATP
1 Proton makes how many ATP
How much ATP is made in total
1 ATP
36 aerobic and 2 anaerobic
38 total
How many ATP made by NADH and FADH2
3 and 2
