Two amino acids are attached due to _ bonds in different polypeptide chains:

Correct answer: D. Peptide bond

  • A. Disulphide bonds
  • B. Glycoside bond
  • C. Hydrogen bond
  • D. Peptide bond

Explanation

Peptide bonds are covalent bonds that link the carboxyl group of one amino acid to the amino group of another, forming the backbone of polypeptide chains.

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About Biological Molecules

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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