Which of the following are not polymeric

Options

A. Nucleic acid
B. Proteins
C. Polysaccharides
D. Lipids

Answer

To determine which of the following biomolecules are not polymeric in nature, we will analyze each option: nucleic acids, proteins, polysaccharides, and lipids.

### Step-by-Step Solution:

1. **Understanding Polymers:**
- Polymers are large molecules made up of repeating subunits called monomers. For a substance to be considered a polymer, it must consist of a chain of these monomers.

2. **Analyzing Nucleic Acids:**
- Nucleic acids (e.g., DNA and RNA) are polymers made up of nucleotide monomers. Each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base. Therefore, nucleic acids are polymeric in nature.

3. **Analyzing Proteins:**
- Proteins are also polymers, formed by the linkage of amino acid monomers through peptide bonds. The sequence of amino acids determines the structure and function of the protein. Thus, proteins are polymeric in nature.

4. **Analyzing Polysaccharides:**
- Polysaccharides are polymers made up of monosaccharide monomers (e.g., glucose). These monosaccharides are linked together through glycosidic bonds to form complex carbohydrates. Therefore, polysaccharides are polymeric in nature.

5. **Analyzing Lipids:**
- Lipids, unlike the other three biomolecules, are not considered polymers. They are composed of various components, such as fatty acids and glycerol, but do not form long chains of repeating monomers. Instead, they are more diverse in structure and do not have a uniform composition. Thus, lipids are not polymeric in nature.

### Conclusion:
Among the options provided, **lipids** are the biomolecules that are not polymeric in nature.

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