A protein having secondary structure possesses:
Correct answer: D. Both A and B
- A. Hydrogen bonding
- B. Peptide bond
- C. Disulfide bond
- D. Both A and B
Explanation
Proteins with a secondary structure have both hydrogen bonding and peptide bonds as essential elements of their stability and conformation. Hydrogen bonding determines the arrangement of secondary structures like alpha-helices and beta-sheets, while peptide bonds link the amino acid residues together in the polypeptide chain.
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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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