Biomolecules · Class 12 · CBSE · Science Chemistry
Which of the following statements is incorrect regarding peptide linkages in proteins?
Practice question from Biomolecules (Class 12 · CBSE · Science Chemistry), with the correct answer and a step-by-step solution.
medium · MCQ · Q-80AE17
Which of the following statements is incorrect regarding peptide linkages in proteins?
- A.A peptide bond is formed by the elimination of a water molecule between the carboxyl group of one amino acid and the amino group of another.
- B.The peptide bond has a partial double bond character due to resonance.
- C.Rotation around the peptide carbon-nitrogen bond is relatively free and unrestricted.Correct answer
- D.In a peptide bond, the carbonyl oxygen and the amide hydrogen are mostly in the trans configuration.
Solution
Due to resonance, the peptide C-N bond acquires a partial double bond character, which restricts rotation, making the amide group planar and rigid.
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