15. A food sample contains 25 g carbohydrate, 8 g fat and 5 g protein. The energy content is:

A) 120 Cal

B) 160 Cal

C) 170 Cal

D) 200 Cal

C) 170 Cal

Explanation:

We are given the composition of a food sample as;

Carbohydrate = 25 g

fat = 8 g

Protein = 5 g

We are needed to determine the energy content of the food;

We need to know the amount energy yielded by each food substance.

That is; carbohydrates and proteins generate 4 calories per gram while fats generates 9 calories per gram.

Therefore;

Amount of energy will be;

= (25 * 4 cal/g) + (8g * 9 cal/g) + (5 g * 4 cal/g)

= 172 cal

Approximately, 170 calories

Therefore, the energy content will be 170 calories