Question

Is a Peptide bond, Polar or Nonpolar.

Answer 1

Nonpolar bonds form between two atoms that share their electrons equally. Polar bonds form when two bonded atoms share electrons unequally. The bond that holds together the two amino acids is a peptide bond. It occurs when the carboxylic group of one molecule reacts with the amino group of the other molecule, linking the two molecules and releasing a water molecule.

Complete answer:
Nonpolar covalent bond is a covalent bond in which the bonding electrons are shared equally between the two atoms. Polar covalent bond is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal. Hence the peptide bond is a nonpolar covalent bond because it holds together two amino acids.
Hence the peptide bond is nonpolar.
A polypeptide chain contains a sequence of amino acids joined by peptide bonds, and each amino acid unit in a polypeptide is called a residue. With an alpha-amino group at one end and an alpha-carboxyl group at the other, a polypeptide chain has polarity because its ends are distinct.

Note:
$C - H$ bond is least polar as the electronegativity difference between $C$ and $H$ is the least. A peptide bond joins together chains of amino acids, which are involved in the construction of our DNA. Another name for peptide bond is amide bond.