| 1. | It functions as an enzyme | 
| 2. | It functions as an electron carrier | 
| 3. | It is a nucleotide source for ATP synthesis | 
| 4. | It is the final electron acceptor for anaerobic respiration | 
| 1. | Enzymes of the TCA cycle are present in the mitochondrial matrix. | 
| 2. | Glycolysis occurs in the cytosol. | 
| 3. | Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms. | 
| 4. | Oxidative phosphorylation takes place in the outer mitochondrial membrane. | 
Which statement is wrong for Krebs' cycle?
| 1. | There is one point in the cycle where FAD+ is reduced to FADH2 . | 
| 2. | During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesized. | 
| 3. | The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid. | 
| 4. | There are three points in the cycle where NAD+ is reduced to NADH + H+. | 
Oxidative phosphorylation is
| 1. | formation of ATP by transfer of phosphate group from a substrate to ADP | 
| 2. | oxidation of phosphate group in ATP | 
| 3. | addition of phosphate group to ATP | 
| 4. | formation of ATP by energy released from electrons removed during substrate oxidation |