Primary structure of protein is due to

Options

A. hydrogen bonds
B. peptide bonds
C. `-s-s` linkages
D. ionic bonds

Answer

**Step-by-Step Solution:**

1. **Understanding Protein Structure**: Proteins are essential biomolecules that serve various functions in the body. They are made up of smaller units called amino acids.

2. **Identifying the Primary Structure**: The primary structure of a protein refers to the specific sequence of amino acids in a polypeptide chain. This sequence determines the protein's unique characteristics and functions.

3. **Linkage of Amino Acids**: Amino acids are linked together to form proteins through a specific type of bond. This bond is crucial for establishing the primary structure.

4. **Peptide Bonds**: The bond that links amino acids together is called a peptide bond. A peptide bond is formed between the carboxyl group of one amino acid and the amino group of another amino acid. This reaction occurs through a process known as a condensation reaction, where a molecule of water is released.

5. **Conclusion**: Therefore, the primary structure of a protein is due to the formation of peptide bonds between amino acids. The correct answer to the question is option B: peptide bond.

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