In human nutrition, alcohol (ethanol) provides how many kilocalories (kcal) per gram?

• A. 2 kcal/g
• B. 9 kcal/g
• C. 7 kcal/g
• D. 4 kcal/g

Answer: (C)

Verified step by step guidance

1. Understand that the problem is asking for the energy content of alcohol (ethanol) in terms of kilocalories per gram, which is a measure of how much energy the body can obtain from metabolizing one gram of alcohol.
2. Recall that macronutrients provide different amounts of energy: carbohydrates and proteins provide about 4 kcal/g, fats provide about 9 kcal/g, and alcohol provides a distinct value.
3. Recognize that alcohol is not a macronutrient essential for nutrition but still provides energy when consumed.
4. Use the known standard value for the energy content of alcohol, which is commonly accepted in nutrition science.
5. Conclude that alcohol provides 7 kilocalories per gram, which is between the energy values of carbohydrates/proteins and fats.