Final answer:
C. nucleotide: DNA The correctly matched pair is C. nucleotide: DNA. DNA is composed of nucleotides. Glycerol and fatty acids are components of lipids, which are unrelated to RNA.
Step-by-step explanation:
The correctly matched pair from the options provided is C. nucleotide: DNA. This is because DNA is a long polymer made of monomers called nucleotides. Each nucleotide consists of a pentose sugar, a phosphate group, and a nitrogenous base. Amino acids are the building blocks of proteins, not carbohydrates. Monosaccharides are single sugar molecules that serve as the building blocks of carbohydrates, not lipids. For the last option, glycerol and fatty acids are components of lipids but not of RNA; RNA is composed of ribonucleic acids.
Among the choices given, water is not one of the four major classes of organic compounds, which are nucleic acids, proteins, carbohydrates, and lipids. Cellulose and starch are polysaccharides, a type of carbohydrate. The two types of macromolecules that are the main components of myelin are lipids and proteins. Monosaccharides may link together to form polysaccharides by forming glycosidic bonds, which is a key reaction in the synthesis of carbohydrates.
The correctly matched pair is nucleotide: DNA. A nucleotide is the basic structural unit of nucleic acids, including DNA. DNA is made up of nucleotides that are composed of a sugar, a phosphate group, and a nitrogenous base. Therefore, nucleotide and DNA are correctly matched.