| List I | List II | ||
|---|---|---|---|
| A | Citric acid cycle | I | Cytoplasm |
| B | Glycolysis | II | Mitochondrial matrix |
| C | Electron transport System | III | Intermembrane space of mitochondria |
| D | Proton gradient | IV | Inner mitochondrial membrane |
Match List-I with List-II and select the correct option: 
It is the process in which glucose is broken down to produce energy. It produces two molecules of pyruvate, ATP, NADH and water. If the process takes place in cytoplasm of a cell and it does not require oxygen. It occurs in both aerobic and anaerobic organisms.
