Glycolysis takes place in the cytoplasm. Within the mitochondrion, the citric acid cycle occurs in the mitochondrial matrix, and oxidative metabolism occurs at the internal folded mitochondrial ...
A second autotrophic pathway (Arnon–Buchanan cycle) uses a reductive citric acid cycle and is found in anaerobic or microaerophilic bacteria and archaea. A third autotrophic pathway (Wood ...