To solve the problem, we need to match each element from List I with the corresponding element in List II based on their functions or characteristics:
- GLUT-4: This is a glucose transporter found in adipose tissues and striated muscle and is responsible for glucose transport into cells. Thus, it corresponds with IV: "Enables glucose transport into cells".
- Insulin: A hormone that regulates glucose levels in the blood, triggering the uptake of glucose from the blood into fat, liver, and skeletal muscle cells. This matches with I: "Hormone".
- Trypsin: It is an enzyme that helps in the digestion of proteins in the small intestine. Trypsin is a match for II: "Enzyme".
- Collagen: A structural protein found in various connective tissues, providing structural support for cells. It corresponds to III: "Intercellular ground substance".
The correct matching is therefore: A-IV, B-I, C-II, D-III.