Which nutrient provides about 9 kcal per gram?

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Study for the ELANCO Advanced Animal Science Exam. Enhance your knowledge with flashcards and multiple choice questions, with hints and explanations for each question. Get ready for your exam!

Multiple Choice

Which nutrient provides about 9 kcal per gram?

Explanation:
Energy content per gram of macronutrients is what this question tests. Fats, or lipids, provide about 9 kcal per gram, making them the most energy-dense nutrient. This higher energy yield comes from fat's chemical structure, which stores more energy when broken down during metabolism. In contrast, carbohydrates and proteins yield about 4 kcal per gram, and minerals provide no usable calories. Knowing this helps explain why fats contribute more energy per gram and why the nutrient that provides about 9 kcal per gram is lipids.

Energy content per gram of macronutrients is what this question tests. Fats, or lipids, provide about 9 kcal per gram, making them the most energy-dense nutrient. This higher energy yield comes from fat's chemical structure, which stores more energy when broken down during metabolism. In contrast, carbohydrates and proteins yield about 4 kcal per gram, and minerals provide no usable calories. Knowing this helps explain why fats contribute more energy per gram and why the nutrient that provides about 9 kcal per gram is lipids.

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