Why does only glycolysis occur in anaerobic respiration

Okay so why is it that only glycolysis occurs in anaerobic respiration but not link reaction and Krebs cycle? Why does krebs and link require oxygen and not glycolysis? I thought glycolysis also delivers NADH+ to etc, so wouldn’t oxygen be the final acceptor for the NADH+’s electron from glycolysis? Ugh does this make sense it’s so late and I’m tired but please I need help!

Reply 1

Nora_Tamer

Original post by looking-clamor

Because at the end of the day .. kerbs cycle will produce reduced NAD and Reduced FAD that will need to return back to being oxidised as they were in the original so they become oxidised in oxidative phosphorylation where they lose hydrogen atoms and oxygen in needed in oxidative phosphorylation to gain hydrogen ions and electrons ( final electron and proton acceptor) so water forms and so cycle can continue .. that is why oxygen is not needed in glycolysis only