The most ancient CO₂ fixation pathway in anaerobic phototrophic bacteria and archaea is the
A) reverse TCA cycle.
B) 3-hydroxypropionate cycle.
C) Calvin cycle.
D) reductive acetyl-CoA pathway.
E) glyoxylate bypass.

Question

Quizplus · Accepted Answer

The reverse TCA cycle is the most ancient CO₂ fixation pathway in anaerobic phototrophic bacteria and archaea.

The Most Ancient CO₂ Fixation Pathway in Anaerobic Phototrophic Bacteria