Question
Match the following electron transport chain (ETC) inhibitors with their mode of action.
| Column I | Column II |
| A. Dinitrophenol (2,4- DNP) | 1. Electron flow from cyt a3 to O2 |
| B. Cyanide | 2. Direct electrons from Co-Q to O2 |
| C. Antimycin-A | 3. Electron flow from NADH/FADH2 to Co- Q |
| D. Rotenone | 4. Electron flow from Cyt- b to Cyt- c |
A - 2; B - 4; C - 1; D - 3
A - 2; B - 1; C - 4; D - 3
A - 3; B - 4; C - 1; D - 2
A - 1; B - 2; C - 3; D - 4
Solution
A.
A - 2; B - 4; C - 1; D - 3
| Column I | Column II |
| A. Dinitrophenol (2,4- DNP) | 2. Direct electrons from Co-Q to O2 |
| B. Cyanide | 4. Electron flow from Cyt- b to Cyt- c |
| C. Antimycin-A | 1. Electron flow from cyt a3 to O2 |
| D. Rotenone | 3. Electron flow from NADH/FADH2 to Co- Q |
