Steps involved in making ATP at Electron Transport Chain
1. NADH and FADH unload protons (H+) and electrons at first and second protein of ETC
2. Excited electrons power active transport of protons (H+) from mitochondrial matrix into narrow intermembrane space
3. Concentration of protons (H+) increases
4. To move down concentration gradient, protons (H+) need to move through protein channel (ATP synthase) – ADP + Pi → ATP
5. Large amounts of ATP are made
6. Unbound protons (H+) and electrons bind with oxygen to produce water