Final answer:
True, the uptake and metabolism of amino acids in the pancreatic beta cells contribute to insulin secretion; insulin plays a vital role in glucose and fat metabolism, and maintains glucose homeostasis.
Step-by-step explanation:
True. Amino acid uptake and metabolism in the beta cells of the pancreas does contribute to insulin secretion. The absorptive state of the body, predominantly after a meal, involves the uptake of nutrients including amino acids. These amino acids are absorbed and can stimulate the pancreatic beta cells to secrete insulin. Insulin in turn plays a significant role in carbohydrate and fat metabolism; it controls blood glucose levels and promotes the uptake of glucose into body cells.
This facilitates insulin's role in homeostasis of blood glucose by starting the absorption process of blood glucose by liver hepatocytes, and by adipose and muscle cells, promoting its storage as glycogen for later energy needs. Additionally, insulin stimulates the transcellular transport of amino acids, effectively ensuring their reabsorption and minimizing their loss through urine.