Aerobic respiration
Glycolysis
**2ATP** (Substrate-level phosphorylation)
2 HADH·H⁺ → 6 ATP (in electron-transport chain)
**Pyruvate oxidation**
2 HADH·H⁺ → 6 ATP (in electron-transport chain)
Krebs cycle
**2ATP** (Substrate-level phosphorylation)
6 HADH·H⁺ → 18 ATP (in electron-transport chain)
2 FADH₂ → 4 ATP (in electron-transport chain)
Total net ATP yield = 38 (36 in eukaryotes)