Which nutrients are comprised of organic molecules?

• A. Only macronutrients.
• B. Only micronutrients and water.
• C. Only vitamins and minerals.
• D. Only macronutrients and vitamins.

Answer: (D)

Verified step by step guidance

1. Understand the term 'organic molecules': Organic molecules are compounds that contain carbon atoms bonded to hydrogen atoms. These molecules are typically found in living organisms.
2. Identify the macronutrients: Macronutrients include carbohydrates, proteins, and fats. All of these are organic molecules because they contain carbon-hydrogen bonds.
3. Examine vitamins: Vitamins are also organic molecules because they are carbon-based compounds essential for various biological functions.
4. Analyze micronutrients and water: Micronutrients such as minerals (e.g., iron, calcium) and water are inorganic. Minerals are elements and do not contain carbon-hydrogen bonds, and water (H₂O) is also inorganic.
5. Conclude that the correct answer is 'Only macronutrients and vitamins,' as these are the nutrients comprised of organic molecules.