Multiple Choice
In the context of energy in food, how many joules (J) are in 55.2 calories (cal), using the conversion ?
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1. Science of Nutrition
Energy in Food
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In nutrition, how many kilocalories (Calories) are provided by 1 gram of fat?
A
7 kcal
B
4 kcal
C
2 kcal
D
9 kcal
Verified step by step guidance1
Understand that in nutrition, the energy provided by macronutrients is measured in kilocalories (kcal), often referred to as Calories with a capital C.
Recall the standard energy values for macronutrients: carbohydrates provide 4 kcal per gram, proteins provide 4 kcal per gram, and fats provide 9 kcal per gram.
Recognize that the question asks specifically about the energy provided by 1 gram of fat, so focus on the energy value associated with fat.
Use the known energy value for fat, which is 9 kcal per gram, to answer the question.
Conclude that 1 gram of fat provides 9 kilocalories (Calories) of energy.
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