Which monomers make up DNA?

• A. Nucleotides (deoxyribonucleotides)
• B. Amino acids
• C. Monosaccharides
• D. Fatty acids

Answer: (A)

Verified step by step guidance

1. Understand that DNA is a polymer, which means it is made up of repeating units called monomers.
2. Recall that the monomers of DNA are specifically called nucleotides, which consist of three parts: a phosphate group, a deoxyribose sugar, and a nitrogenous base.
3. Recognize that amino acids are the monomers of proteins, monosaccharides are the monomers of carbohydrates, and fatty acids are components of lipids, so these are not the building blocks of DNA.
4. Identify that the correct monomers for DNA are deoxyribonucleotides, which differ from ribonucleotides found in RNA by the absence of one oxygen atom on the sugar.
5. Summarize that DNA is composed of nucleotides (deoxyribonucleotides), which link together through phosphodiester bonds to form the DNA strand.