DNA is classified as which type of biological macromolecule?

• A. Lipid
• B. Nucleic acid
• C. Protein
• D. Carbohydrate

Answer: (B)

Verified step by step guidance

1. Understand that biological macromolecules are large molecules essential for life, including lipids, proteins, carbohydrates, and nucleic acids.
2. Recall that DNA (deoxyribonucleic acid) carries genetic information and is composed of nucleotides, which are the building blocks of nucleic acids.
3. Recognize that nucleotides consist of a sugar, a phosphate group, and a nitrogenous base, which together form the structure of DNA.
4. Identify that because DNA is made up of nucleotides and functions to store genetic information, it is classified as a nucleic acid.
5. Conclude that among the options given (lipid, protein, carbohydrate, nucleic acid), DNA belongs to the nucleic acid category.