Final answer:
Vitamin A influences the metabolic activities of tissues in the body, affecting processes like bone metabolism and carbohydrate metabolism. It also promotes tissue growth and protein synthesis. Additionally, it plays a role in the conversion of beta-carotene to vitamin A.
Step-by-step explanation:
Vitamin A plays a significant role in various metabolic activities of tissues in the body. It influences these functions through its involvement in biochemical reactions. One way it exerts its influence is by regulating blood calcium levels, which affects bone metabolism. Additionally, vitamin A increases the absorption of glucose from the intestine and promotes glycogenolysis and gluconeogenesis, leading to increased metabolism of carbohydrates. Moreover, it enhances the growth and development of tissues by promoting protein synthesis. Finally, vitamin A aids in the conversion of beta-carotene to vitamin A, which is essential for its metabolic activities.