Which vitamin is involved in the metabolism of carbohydrates and fats?

Riboflavin, also known as Vitamin B2, plays a crucial role in the metabolism of carbohydrates and fats. It is a water-soluble vitamin that acts as a coenzyme in various biochemical reactions. Specifically, riboflavin is involved in the electron transport chain and the metabolism of macronutrients, helping to convert carbohydrates and fats into energy.

Riboflavin is essential for the functioning of other coenzymes, such as flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), which are vital for oxidative processes that generate ATP, the energy currency of the cell. This process is crucial for energy production during metabolism, making riboflavin an indispensable component when it comes to utilizing carbohydrates and fats efficiently for energy.

In contrast, other vitamins listed, such as Vitamin A, Vitamin D, and Vitamin K, have different primary functions. Vitamin A is primarily involved in vision and immune function, Vitamin D regulates calcium and phosphate metabolism for bone health, and Vitamin K is essential for blood clotting. Thus, the metabolic roles of these vitamins do not include direct involvement in carbohydrate and fat metabolism like riboflavin does.