Question
a.
The rigid double bond structure forces atoms associated with the peptide bond to lie in the same plane, called the dipeptide plane
b.
A peptide bond is actually a partial double bond owing to shared electrons between O=C–N atoms
c.
Because of the planar nature of the peptide bond and the size of the R groups, there are considerable restrictions on the rotational freedom by the two bonded pairs of atoms around the peptide bond
d.
The angle of rotation about the bond is referred to as the dihedral angle (also called the torsional angle)
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