What do aerobic respiration and anaerobic respiration have in common?

Both aerobic and anaerobic respiration begin with glycolysis, which breaks glucose into smaller molecules and produces a small amount of ATP. Aerobic respiration then uses oxygen in later stages, while anaerobic pathways proceed without oxygen. So the shared feature is that both begin with glycolysis; they do not both require oxygen or necessarily use mitochondria and an electron transport chain.

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