how is ATP formed from the electron transport chain?

Question

How is ATP formed from the electron transport chain?
A) charge difference of outer and inner membrane gives motive force to generate ATP
B) nitrates are used as their final electron acceptor
C) the last step involves H2O to be split into O2
D) all of the metabolites enter the Krebs cycle

Answer 1

A) charge difference of outer and inner membrane gives motive force to generate ATP



The electron transport chain accomplishes:



the stepwise transfer of electrons from NADH (and FADH2) to oxygen molecules to form (with the aid of protons) water molecules



harnessing the energy released by this transfer to the pumping of protons (H+) from the matrix to the intermembrane space.



The gradient of protons formed across the inner membrane by this process of active transport forms a miniature battery.

The protons can flow back down this gradient, reentering the matrix, only through another complex of integral proteins in the inner membrane, the ATP synthase complex



http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/CellularRespiration.html

Answer 2

A) charge difference of outer and inner membrane gives motive force to generate ATP - due to a proton gradient caused by the pumping action of the electron transport chain.

Answer 3

3 molecules of ATP for NADH2 2 molecules of ATP for FADH2 a million molecule of ATP for GTP yet there could be version in case of NADH2, for that's introduced to mitochondrial membrane from cystosol ( from Glycolysis). it relies upon with metabolic course it follows Aspartate- maltate commute----3 molecules of ATP for NADH2 phosphate-glycerol course------2 molecules of ATP for NADH2 Helped it labored