| 1. | A is an ester bond; B is a glycosidic bond and they are type of hydrogen bonds |
| 2. | A is an ester bond; B is a glycosidic bond and they are formed by dehydration synthesis |
| 3. | A is a peptide bond; B is a glycosidic bond and they are types of hydrogen bonds |
| 4. | A is a peptide bond; B is an ester bond and they are formed by dehydration synthesis |
| 1. | Nicotinamide adenine dinucleotide | 2. | Haem |
| 3. | Zinc | 4. | Niacin |
| 1. | Uridine | 2. | Thymidine |
| 3. | Uridylic acid | 4. | Thymidylic acid |
| 1. | prosthetic group and is a part of active site |
| 2. | prosthetic group and is not a part of active site |
| 3. | is a co-enzyme |
| 4. | is a co-substrate |
| 1. | GLUT-4 | – | Unable glucose transport into cells |
| 2. | Trypsin | – | Enzyme |
| 3. | Essential oil | – | Lemon grass oil |
| 4. | Drug | – | Vinblastin |