The caloric yield per gram for carbohydrate, fat, and protein corresponds respectively to _________________________ Calories?
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Answer: B. 4, 9, 4
Explanation
Carbohydrates and proteins yield approximately 4 calories per gram, while dietary fats yield 9 calories. Multiplying macronutrient gram weights by these caloric values determines total energy content in foods. Dietary science establishes these exact metabolic energy yields through bomb calorimeter combustion studies. Macronutrients provide the chemical energy necessary to fuel all human physiological and mechanical functions. Fats are the most energy-dense macronutrient, storing over twice the caloric density of carbs or proteins. Understanding caloric yields allows nutritionists to calculate daily energy requirements and meal plans.
Food manufacturers print mandatory nutrition facts labels displaying accurate macronutrient caloric breakdowns. Clinical dietitians use these standard 4-9-4 values to design weight management diets for their patients. Athletes calculate their daily caloric intake based on macronutrient distributions for optimal performance. Option A lists 9, 7, and 4, which incorrectly assigns a seven-calorie yield to dietary proteins. Option C proposes 4, 7, and 4, providing an incorrect fat energy yield that contradicts established science. Option D lists 9, 4, and 4, which inverts the energy values by assigning nine calories to carbohydrates.
- Subject
- Physical Education
- Category
- Physical Education
- Topic
- —
- Difficulty
- medium
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