Oxidative phosphorylation, as it occurs in modern eukaryotes, is a complex process that probably arose in simple stages in primitive bacteria. Which mechanism is proposed to have arisen first as this complex system evolved?
(a) electron transfers coupled to a proton pump
(b) the reaction of oxygen with an ancestor of cytochrome c oxidase
(c) ATP-driven proton pumps
(d) the generation of ATP from the energy of a proton gradient
Answer:
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.