What is the primary source of calories derived from carbohydrates?

• A. 3 calories/gram
• B. 4 calories/gram
• C. 5 calories/gram
• D. 6 calories/gram

Answer: (B)

Carbohydrates provide a consistent energy source for the body, and they are measured in terms of calories per gram. The standard caloric value for carbohydrates is 4 calories per gram. This value is important for nutritional calculations and understanding dietary needs, as it helps to determine the contribution of carbohydrates to total caloric intake. This energy derives from the breakdown of sugars and starches consumed in the diet, which are then metabolized to provide fuel for bodily functions, including physical activity and cellular processes. Understanding this caloric value is essential for nutritionists, dietitians, and anyone interested in managing dietary intake effectively.