ATI Fundamentals 5 Practice Test

Understanding energy sources in nutrition is essential. Fats provide energy because they yield about 9 kcal per gram, more than carbohydrates or protein (around 4 kcal per gram). This makes fats a highly concentrated energy source, especially important for sustained activity and for absorbing fat-soluble vitamins. The other statements aren’t accurate: carbohydrates don’t prevent interstitial edema, fluid balance isn’t regulated by fats, and repairing body tissue is a role of protein, not carbohydrates. So including that fats provide energy gives the most correct, useful takeaway for the in-service.