Estimating the Fuel Value of a Food from Its Composition
(a) A 28-g (1-oz) serving of a popular breakfast cereal served with 120 ml_ of skim milk provides 8 g protein, 26 g carbohydrates, and 2 g fat. Using the average fuel values of these substances, estimate the fuel value (caloric content) of this serving, (b) A person of average weight uses about 100 Cal/mi when running or jogging. How many servings of this cereal provide the fuel value requirements to run 3 mi?
A stalk of celery has a caloric content (fuel value) of 9.0 kcal. If 1.0 kcal is provided by fat and there is very little protein, estimate the number of grams of carbohydrate and fat in the celery, (a) 2 g carbohydrate and 0.1 g fat, (b) 2 g carbohydrate and 1 g fat, (c) 1 g carbohydrate and 2 g fat, (d) 2.2 g carbohydrate and 0.1 g fat, (e) 32 g carbohydrate and 10 g fat.