The monomer unit from which a nucleic acid is built is
- A. an amino acid
- B. a monosaccharide
- C. a nucleotide
- D. a fatty acid
Explanation
Each nucleotide consists of a pentose sugar, a phosphate group and a nitrogenous base, and successive nucleotides are linked by phosphodiester bonds between the sugar of one and the phosphate of the next. Amino acids are the monomers of proteins and monosaccharides those of polysaccharides. Fatty acids are components of lipids, which are not true polymers at all.
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