| 1. | Uridine | 2. | Adenylic acid |
| 3. | Guanine | 4. | Guanosine |
Which of the following organic compounds is the main constituent of Lecithin?
| 1. | Arachidonic acid | 2. | Phospholipid |
| 3. | Cholesterol | 4. | Phosphoprotein |
Which one of the following is the most abundant protein in animals?
| 1. | Collagen
|
2. | Lectin
|
| 3. | Insulin
|
4. | Hemoglobin |