Answer:
C. lipids.
Step-by-step explanation:
Lipids are a diverse group of molecules that include fats, oils, phospholipids, and steroids. Unlike proteins, carbohydrates, and nucleic acids, lipids are not polymers.
Polymers are large molecules made up of repeating subunits called monomers. In the case of proteins, the monomers are amino acids, which join together through peptide bonds to form polypeptide chains. Carbohydrates, such as starch and cellulose, are polymers made up of monosaccharide monomers that are linked together through glycosidic bonds. Nucleic acids, such as DNA and RNA, are polymers composed of nucleotide monomers linked together through phosphodiester bonds.
Lipids, on the other hand, are characterized by their hydrophobic nature and insolubility in water. They are composed of various types of molecules, including fatty acids, glycerol, and other organic compounds. Lipids do not have a repeating monomeric structure like proteins, carbohydrates, and nucleic acids. Instead, lipids consist of a diverse array of structures and functions, ranging from energy storage to insulation and cell membrane components.
In summary, lipids are a class of biological molecules that do not include polymers. Unlike proteins, carbohydrates, and nucleic acids, lipids do not have a repeating monomeric structure. Instead, they are a diverse group of molecules with various structures and functions.