Which of the following is not a micro-nutrient?

GMCH Chandigarh - 2022

Applied Nutrition & Dietetics

Easy

Appeared in: GMCH Chandigarh - 2022

Explanation

Protein is classified as a macronutrient, not a micronutrient, because the body requires it in large amounts.
Macronutrients, also known as 'proximate principles', form the main bulk of food and are essential for energy, growth, and repairing body tissues.
Proteins provide about 4 kcal of energy per gram and are the primary building blocks for muscles, organs, and enzymes.
In contrast, micronutrients (vitamins and minerals) are required in trace amounts and do not provide energy but are crucial for metabolic functions.

Option A: Vitamin A is a classic example of a micronutrient. It is a fat-soluble vitamin essential for vision, immune function, and cell growth.
Option B: Zinc is a micronutrient, specifically a trace mineral. It plays a critical role in numerous enzymatic reactions, immune function, wound healing, and protein synthesis.
Option D: Vitamin C (ascorbic acid) is a water-soluble vitamin, which is a category of micronutrients. It is vital for collagen synthesis, antioxidant protection, and immune defense.

Visual 1: Chart - A comparative chart showing Macronutrients (Proteins, Fats, Carbohydrates) on one side and Micronutrients (Vitamins, Minerals) on the other, with examples and daily requirements.
Visual 2: Food Pyramid - An infographic of the food pyramid, illustrating that fats, oils, and sweets are at the top (use sparingly), while cereals, which provide carbohydrates and some protein, form the base (eat most).

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.
Understanding the difference between macronutrients and micronutrients is fundamental for nurses in providing patient education on balanced diets, planning therapeutic diets, and assessing nutritional status.
Nurses often manage dietary modifications for patients with conditions like diabetes (carbohydrate monitoring), heart disease (fat and salt monitoring), and kidney disease (protein restriction).
Micronutrient deficiencies, or 'hidden hunger', can lead to specific diseases (e.g., scurvy from Vitamin C deficiency, night blindness from Vitamin A deficiency), which nurses must be able to identify and report.

How to Approach the Question

First, identify the negative keyword 'not' in the question. This means you are looking for the option that is the exception.
Next, define the key term in the question: 'micro-nutrient'. Recall that micronutrients are vitamins and minerals needed in small amounts.
Evaluate each option against this definition.
Option A, Vitamin A, is a vitamin, so it's a micronutrient.
Option B, Zinc, is a mineral, so it's a micronutrient.
Option C, Protein, is needed in large amounts for energy and building tissue. It is a macronutrient.

Concept Tested & Keywords

Concept Tested: Classification of nutrients: Macronutrients vs. Micronutrients
Stem keywords: micro-nutrient, not
Lead-in keywords: not
Negative lead-in flag: This question uses negative framing ('NOT'), requiring you to identify the option that does not fit the category of a micronutrient.

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