How is ATP made by an acetogen during CO₂ fixation?
A) Electrons from metal cofactors energize the electron transport chain and drive the proton motive force to activate ATP synthase.
B) Substrate-level phosphorylation of ADP occurs when coenzyme A is removed from acetyl-CoA.
C) It is made by substrate-level phosphorylation and a Na⁺-translocating ATPase.
D) The energized CO-CH3 complex during thioesterification drives a Na⁺-translocating ATPase.

Question

Quizplus · Accepted Answer

Acetogens can fix carbon dioxide through the Wood-Ljungdahl pathway, which generates a proton motive force that drives a Na⁺-translocating ATPase to make ATP by substrate-level phosphorylation. This is the main mechanism by which acetogens produce ATP during CO₂ fixation.

How Is ATP Made by an Acetogen During CO₂ Fixation