Which macronutrient typically contains nitrogen in its chemical structure?

• A. Fat (lipid)
• B. Alcohol
• C. Protein
• D. Carbohydrate

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the four main macronutrients: proteins, carbohydrates, fats (lipids), and alcohol. Each has a distinct chemical composition.
2. Step 2: Recall that proteins are made up of amino acids, which contain nitrogen atoms in their structure, specifically in the amino group (-NH2).
3. Step 3: Recognize that carbohydrates and fats primarily consist of carbon, hydrogen, and oxygen atoms, and do not contain nitrogen.
4. Step 4: Note that alcohol is not considered a macronutrient and also lacks nitrogen in its chemical structure.
5. Step 5: Conclude that among the options, protein is the macronutrient that typically contains nitrogen due to its amino acid building blocks.