Which nutrients form the backbone of many organic molecules such as amino acids, proteins, and nucleic acids?

Which nutrients form the backbone of many organic molecules such as amino acids, proteins, and nucleic acids?

• A. Carbohydrates only.
• B. Amino acids, proteins, nucleic acids.
• C. Water molecules.
• D. Lipids and carbohydrates only.

Answer: (B)

Organic molecule frameworks are built from specific building-block units that serve as scaffolds. For proteins, the long chain is formed by linking amino acids, while nucleic acids are built from nucleotides that create a sugar–phosphate backbone. These monomer units supply the essential backbone that shapes the structure and function of these macromolecules. Among the options, the nutrients that provide these foundational units are amino acids and nucleotides, which underlie the formation of proteins and nucleic acids. Carbohydrates, lipids, and water have important roles in energy, storage, and environment, but they do not supply the repeating backbone units for these particular biomolecules.

Organic molecule frameworks are built from specific building-block units that serve as scaffolds. For proteins, the long chain is formed by linking amino acids, while nucleic acids are built from nucleotides that create a sugar–phosphate backbone. These monomer units supply the essential backbone that shapes the structure and function of these macromolecules. Among the options, the nutrients that provide these foundational units are amino acids and nucleotides, which underlie the formation of proteins and nucleic acids. Carbohydrates, lipids, and water have important roles in energy, storage, and environment, but they do not supply the repeating backbone units for these particular biomolecules.