Multiple Choice
Where is chemical energy stored in a molecule?
8. Thermochemistry
Nature of Energy
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Which of the following provides the most energy per gram?
A
Fats
B
Carbohydrates
C
Proteins
D
Vitamins
Verified step by step guidance1
Understand the concept of energy content in macronutrients: Fats, carbohydrates, and proteins are macronutrients that provide energy, while vitamins do not provide energy directly.
Recall the energy content per gram for each macronutrient: Fats provide approximately 9 kcal/g, carbohydrates provide about 4 kcal/g, and proteins also provide around 4 kcal/g.
Compare the energy content: Since fats provide 9 kcal/g, which is more than carbohydrates and proteins (both providing 4 kcal/g), fats provide the most energy per gram.
Consider the role of vitamins: Vitamins are essential for various bodily functions but do not contribute to energy content directly, so they are not considered in this comparison.
Conclude based on the comparison: Fats are the macronutrient that provides the most energy per gram compared to carbohydrates and proteins.
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