A serving of food contains 15 g carbohydrate, 2 g protein, 4 ounces of water, 5 g fat, 25 mcg vitamin A, 2.5 mg niacin, and 0.8 mg iron. Based on this information, a serving of this food supplies ____ kcal.

Question

Quizplus · Accepted Answer

To calculate the total kcal, use the macronutrient values: Carbohydrates (4 kcal/g) and proteins (4 kcal/g) contribute 15g * 4kcal/g = 60 kcal and 2g * 4kcal/g = 8 kcal, respectively. Fats (9 kcal/g) contribute 5g * 9kcal/g = 45 kcal. Adding these together, 60 kcal + 8 kcal + 45 kcal = 113 kcal. Vitamins and minerals do not contribute calories.

A Serving of Food Contains 15 G Carbohydrate, 2 G