Multiple choice

Which of the following statements is/are false regarding peptide linkage?

  1. C-N bond length in peptide link is intermediate in length between typical carbon-nitrogen single bond and carbon-nitrogen double bond.
  2. Peptide bond is planar.
  3. The two alpha-carbon atoms attached to C-N are always cis to each other.

  1. Only 1

  2. Only 2

  3. Only 3

  4. 1 and 2

  5. 2 and 3
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct answer. The two alpha-carbon atoms attached to C-N are always trans to each other (on the opposite side of the peptide linkage).

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