Exam 6: Measurement of Energy in Food

Application of the RQ assumes that oxygen and carbon dioxide exchange measured at the lungs reflects the actual gas exchange from macronutrient metabolism in the cell.

Atwater calorific values allow one to compute the caloric content of any meal from the food's carbohydrate, lipid, and protein content.

During closed-circuit spirometry:

The relative percentage of carbohydrates completely digested and absorbed.

Bomb calorimetry.

Pregnancy affects total daily energy expenditure mainly through its effect of increasing the energy cost of many modes of physical activity.

Accurately estimates the net energy typically metabolized for consumed foods.

Proteins are readily available and easily metabolized by muscles.

Estimates total daily energy expenditure of humans in free-living conditions without the normal constraints imposed by laboratory procedures.

Precisely determines the body's heat production.

Not a component of total daily energy expenditure.

Highest number of hydrogen atoms available for oxidation to supply energy?

Heat of combustion.

Macronutrient with the highest average heats of combustion.

Walking and other weight-bearing exercises require a substantially lower calorie burn for heavier people.

The bomb calorimeter requires an external supply of carbon dioxide.

The coefficient of digestibility.

To adjust for the effects of variations in body size on oxygen consumption, researchers frequently express oxygen consumption in terms of body mass known as relative oxygen consumption.

Carbohydrate can be used to form ATP.

500 kilocalories of chocolate ice cream topped with whipped cream and hazelnuts is no more fattening than 500 kilocalories of watermelon.