This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of protein and amino acid, Subject name: Biochemistry
In the body, metabolism of 10 gms. of protein would produce approximately 
Select and explain. 
A. 1 K. Caorie, B. 41 K calories, C. 410 K calories, D. 41 calories
B: 41 K calories
Answer: B: 41 K calories 
Explanation: Calorific value of nutrientsNutrientEnergy yield kcal/gramEnergy yield kjoule/gramRQ Carbohydrates4161 Fat937.71 Protein4.217.81 Alcohol728.66 Ref: Textbook of biochemistry (DM Vasudevan ), 6th edition, page no. 432