Measuring Metabolism-- Basal Metabolic Rate and Respiratory Quotient

Practice: A 20-year-old college student eats a slice of pepperoni pizza. The slice has 10 g of carbohydrates, 10 g of protein, and 10 g of fat. How many kilocalories were in the slice of pizza?

Practice: Which of the following people is likely to have the highest basal metabolic rate?

Practice: A 28-year-old fitness fanatic decides to “go keto,” which means that he’s going to eat only proteins and fats, without any carbohydrates. Which of the following could be this man’s respiratory quotient (RQ) one week after faithfully following this diet?