Question

The energy content in kcal/g of carbohydrate: Protein: triglycerol respectively is approximately in the ratio of

• A. 1 : 2 : 2
• B. 1 : 1 : 2
• C. 2 : 1 : 1
• D. 2 : 2 : 1

Answer 1

Answer: (B)

Calories are needed to provide energy so, the body functions properly. The number of calories in a food depends on the amount of energy the food provides. The number of calories a person needs depends on age, height, weight, gender and activity level. People who consume more calories than they burn off in normal daily activity or during exercise are more likely to be overweight.
Fat $(1$ gram $)=9$ calories
Protein $(1$ gram $)=4$ calories
Carbohydrates $(1$ gram $)=4$ calories
Triglycerol is an ester derived from glycerol and three fatty acids. It is the main constituent of vegetable oil and animal fats. Therefore, the approximate ratio of the energy content in $kcal/g$ of carbohydrate : protein : triglycerol is $1:1:2$.