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Multiple Choice
How many kilocalories are provided by 1 gram of fat?
A
7 kcal
B
9 kcal
C
4 kcal
D
2 kcal
Verified step by step guidance
1
Understand the concept: Fat is a macronutrient, and its energy content is typically measured in kilocalories (kcal). The standard value for energy provided by 1 gram of fat is 9 kcal.
Review the options provided in the problem: 7 kcal, 9 kcal, 4 kcal, and 2 kcal. Compare these values to the standard energy content of fat.
Recall that the energy content of macronutrients is based on biochemical studies. For fats, the energy content is derived from the oxidation of fatty acids during metabolism.
Eliminate incorrect options: 7 kcal, 4 kcal, and 2 kcal are lower than the standard value of 9 kcal for 1 gram of fat. This makes 9 kcal the correct answer.
Conclude that the correct answer is based on the biochemical principle that 1 gram of fat provides 9 kcal of energy.