Which of the following options represents macronutrients?

NHM UP Staff Nurse-2023 Shift-2nd

Applied Nutrition & Dietetics

Easy

Appeared in: NHM UP Staff Nurse-2023 Shift-2nd

Explanation

Proteins are classified as macronutrients because the body requires them in large amounts (in grams) for daily functions.
Macronutrients, which include proteins, carbohydrates, and fats, are the only nutrients that provide the body with energy (measured in calories).
Proteins are fundamental for building and repairing tissues, synthesizing enzymes and hormones, and serve as a structural component of every cell.

Option B: Iodine is a trace mineral, which is a type of micronutrient. It is needed in very small amounts (micrograms) and does not provide energy.
Option C: Calcium is a mineral. Although it's a 'macromineral' (needed in larger amounts than trace minerals), all minerals are classified as micronutrients in the broader nutritional context because they do not provide energy.
Option D: Zinc is a trace mineral and therefore a micronutrient. The body requires it in small quantities for functions like immune support and wound healing.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of Nutrients (Macronutrients vs. Micronutrients) as background academic context rather than a clinical decision trigger.
Nurses use knowledge of macronutrients to perform nutritional assessments, plan dietary interventions, and educate patients on managing conditions like malnutrition, obesity, and diabetes. For example, a high-protein diet is often recommended to promote wound healing in post-surgical patients.
What if? If a patient is receiving a Total Parenteral Nutrition (TPN) solution, the nurse must meticulously monitor the infusion rates of macronutrients (dextrose, amino acids, lipids) to meet the patient's energy needs while preventing complications like hyperglycemia or fluid overload.

How to Approach the Question

First, identify the core concept in the question, which is to define and identify a 'macronutrient'.
Recall the fundamental classification of nutrients. Nutrients are divided into two main groups based on the quantity required by the body: macronutrients and micronutrients.
Mentally list the three types of macronutrients: Proteins, Carbohydrates, and Fats. Remember that these are the nutrients that provide calories (energy).
Evaluate each option against this list. 'Proteins' is a direct match.
Analyze the other options to confirm they are incorrect. Iodine, Calcium, and Zinc are all minerals. Recall that all minerals and vitamins are classified as micronutrients because they are needed in smaller amounts and do not provide energy.
This process of elimination and direct recall confirms that Proteins is the only macronutrient among the choices.

Concept Tested & Keywords

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