The primary structure of proteins is stabilized by:
Correct answer: D. Peptide bonds
- A. Disulphide bonds
- B. Hydrogen bonds
- C. Hydrophobic interaction
- D. Peptide bonds
Explanation
The primary structure of proteins is stabilized by peptide bonds. Peptide bonds are the bonds that link amino acids together to form a polypeptide chain. Peptide bonds are formed when the carboxyl group of one amino acid reacts with the amino group of another amino acid. The reaction releases a molecule of water and forms a covalent bond between the two amino acids.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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