Which characteristics are correct for a peptide bond in a polypeptide?
I. planar
II. cis
III. trans
IV. tetrahedral

Question

Quizplus · Accepted Answer

A peptide bond is planar, meaning it lies in the same plane as the atoms surrounding it. It is also trans, meaning the atoms on either side of the bond lie on opposite sides of the peptide bond. Peptide bonds have a partial double bond character due to resonance, and therefore have a rigid, planar structure. This resonance also contributes to the peptide bond having a tetrahedral geometry around the atoms involved in the bond, but the bond itself is planar.

Which Characteristics Are Correct for a Peptide Bond in a Polypeptide