Question

which food item will provide the most calories?
a. 25 grams of butter (lipid)
b. 35 grams of soy protein (protein)
c. 30 grams of salt (mineral)
d. 40 grams of sugar (carbohydrate)

Explanation:

Step1: Recall calorie per gram values

Lipids: $9$ kcal/g, Protein/Carbs: $4$ kcal/g, Salt: $0$ kcal/g

Step2: Calculate calories for option a

$25 \times 9 = 225$ kcal

Step3: Calculate calories for option b

$35 \times 4 = 140$ kcal

Step4: Calculate calories for option c

$30 \times 0 = 0$ kcal

Step5: Calculate calories for option d

$40 \times 4 = 160$ kcal

Step6: Compare all calorie values

$225 > 160 > 140 > 0$

Answer:

a. 25 grams of butter (lipid)