4. ETC Flashcards
Whats the goal of the ETC
Extract the potential energy from NADH and FADH2 for the synthesis of ATP
How many ATP are produced from the ETC
32-38
Where is the ETC located
Cristae
What is the ETC compossed of
4 protien complexes that pump H+ (creating a H+ graident, causing chemiomosis)
- ATP synthase - transmembrane protiens (uses H+ gradient to drive oxidative phosphorlyationH
- Requires O2
What is chemiomosis?
The diffusion of ions across a selectivly permeable membrane
What are the compounts in the ETC (in order)
- NADH dehydrogose
- Ubiquinone (a)
- Cytochrome b-c complex
- Cytochrome c complex
- Cytochrome oxidase complex
How are compounds arranged
In order of increasing electonegitivy (each successive compound wants the electrons more than the one before it)
How are compounds reduced/oxidized
By gaining 2 electrons from the one before it, and oxidized by donating 2 electrons to the one after it
Explain the flow of hydrogen
- Hs cleved (brocken) from NADH and FADHs
- Electrons stripped from H atoms (H– H+ + e-)
- E-s passed only from one electron carrier to next (floweing electrons = free energy to do work)
- Transport membranes move H+ across inner membrane to intermembrane space
How does this process produce ATP
When hydrogen goes through the ATP synthesis, it gives just enough energy for the ADP to enters the complex to create a bond with a P, creating ATP (usable energy)
What are the products of ETC
- ATP (30 - 32)
- Water
