Multiple Choice
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
Correct Answer:

Verified
Correct Answer:
Verified
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