Question

Chemiosmosis in Aerobic Cell Respiration

During oxidative Phosphorylation where is the location of the ETC? What is the original source of the Hydrogen Electrons given to the etc? Where do the Hydrogen electrons end up when they leave the ETC? What specific location becomes acidic/ low pH (has higher H⁺ concentration)? What specific location becomes basic/high pH (has lower H⁺ concentration)?

Answer 1

Answer :- During oxidative phosphorylation, the location of electron transport chain is located in inner mitochondria membrane in embedded form. The source of hydrogen electron by giving to the electron transport chain inorder to generated ATP. As there are steps such as

Redox of NADH+ H+ at complex 1 where proton pumps from matrix to the intermembrane space.

Redox of FADH2 at complex 2 where Co enzyme Q picks up electron and goes to complex 3

Redox of complex 3 where proton pumps from matrix to intermembrane space, carrier C transport electron to complex 4

Redox of complex 4 where 2 protons pumps from matrix intermembrane space leads to formation of H20

ATP synthesis action take place where pumps proton from intermembrane space to matrix produces ATP from ADP + pi + energy.