Question

A Nutrition Facts label states that one serving size contains 12 g total fat, 28 g total carbohydrate, and 3 g protein. Which macronutrient is providing the most metabolizable energy?

Answer 1

Fat is the macronutrient providing the most energy, with 108 Calories, in the given serving size because it's more calorie-dense than proteins and carbohydrates.

Step-by-step explanation:

The macronutrient providing the most metabolizable energy in one serving size that contains 12 g total fat, 28 g total carbohydrate, and 3 g protein is fat. We can calculate the energy each macronutrient provides by multiplying the grams of each by the number of Calories per gram:

• Proteins: 3 g × 4 Calories/g = 12 Calories
• Carbohydrates: 28 g × 4 Calories/g = 112 Calories
• Fats: 12 g × 9 Calories/g = 108 Calories

Therefore, fats contribute the most energy, at 108 Calories, because they are more calorie-dense than proteins and carbohydrates.