Final answer:
Insulin indeed promotes the active transport of amino acids into tissue cells, boosting protein synthesis. This demonstrates insulin's crucial function in regulating not just glucose but also protein metabolism.
Step-by-step explanation:
The question addresses the role of insulin beyond glucose regulation. Insulin indeed promotes the active transport of amino acids into tissue cells, leading to increased protein synthesis. Insulin not only helps regulate blood glucose levels but also plays a significant role in protein metabolism. It facilitates the uptake of amino acids by cells, which are the building blocks for protein synthesis. This process is essential for muscle growth and repair. Additionally, insulin stimulates the storage of glucose as glycogen in the liver and muscle cells. It also reduces blood glucose levels by stimulating glycolysis and inhibiting glycogenolysis and gluconeogenesis. Insulin-like growth factors (IGFs) also enhance amino acid absorption, promoting protein synthesis, and further asserting the intricate role insulin plays in nutrient metabolism.