Question

Which of the following is true about the peptide bond. Choose all true statements.

	The peptide bond is polar, the N has a partial negative charge and the C has a partial positive charge.
	The peptide bond is uncharged.
	The plane of the peptide bond contains the following atoms: the alpha-carbon atom and CO groups of the first amino acid, the NH group and alpha-carbon of the second amino acid.
	The peptide bond has no double bond character.

Answer 1

The peptide bond is uncharged.

The plane of the peptide bond contains the following atoms: the alpha-carbon atom and CO groups of the first amino acid, the NH group and alpha-carbon of the second amino acid.

Peptide bond Polar because there is an atom of nitrogen and oxygen involved. There is a partial positive charge on the amide nitrogen, and a partial negative charge on the carbonyl oxygen. The partial double bond character makes a peptide bond rigid. The -C=O and -NH groups of the peptide bond are uncharged. The peptide bond is essentially Planar. For a pair of amino acids linked by a peptide bond, six atoms lie in the same plane: the α-carbon atom and CO group from the first amino acid and the NH group and α-carbon atom from the second amino acid