Question

How many calories does one gram of protein give?

• A. 9 Calorie
• B. 8 Calorie
• C. 6 Calorie
• D. 4 Calorie

Hint:

Remember: Carbs and Proteins = 4 calories/gram; Fats = 9 calories/gram; Alcohol = 7 calories/gram. This helps in understanding energy content of foods and balanced diet planning.

Answer 1

The Correct Option is D

Calories are units of energy provided by different nutrients in food. Each macronutrient yields a specific number of calories per gram. Caloric Values of Macronutrients:

Carbohydrates: 4 calories per gram
Proteins: 4 calories per gram
Fats: 9 calories per gram
Alcohol: 7 calories per gram
Why 4 Calories is Correct:

Proteins provide 4 kilocalories (Calories) per gram
This energy is used for:

Tissue repair and growth
Enzyme and hormone production
Immune function
Energy when carbohydrates are insufficient

Why Other Options are Incorrect:

(A) 9 Calorie: This is the caloric value of fats, not proteins
(B) 8 Calorie: No macronutrient provides 8 calories per gram (alcohol provides 7)
(C) 6 Calorie: No common nutrient provides exactly 6 calories per gram
Final Answer: 4 Calorie