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A nurse is teaching about the energy needed at rest to maintain life-sustaining activities for a specific period of time. What is the nurse discussing?

  • A. Resting energy expenditure (REE)
  • B. Basal metabolic rate (BMR)
  • C. Nutrient density
  • D. Nutrients
Correct Answer: B

Rationale: The correct answer is B: Basal metabolic rate (BMR). BMR refers to the minimum amount of energy required to maintain basic physiological functions at rest. It accounts for about 60-75% of total energy expenditure. It is essential for sustaining life-sustaining activities such as breathing, circulating blood, and maintaining body temperature.
Incorrect Choices:
A: Resting energy expenditure (REE) is the total amount of energy expended by the body while at rest, including BMR and additional energy for daily activities.
C: Nutrient density refers to the amount of nutrients per calorie in a food item, not the energy needed at rest.
D: Nutrients are essential substances in food required for growth, maintenance, and repair, but they do not specifically refer to the energy needed at rest.