kind of limited rotation because there is resonance in the amide linkages between adjacent amino
acids.
MCAT Concept Check 3.2:
Before you move on, assess your understanding of the material with these questions.Which is more stable: a bonding orbital or an antibonding orbital? Which has higher
energy?More stable: Higher energy: What differences would be observed in a molecule containing a double bond compared to
the same molecule containing only single bonds?Rank the following orbitals in decreasing order of strength: σ bond, π bond, double bond,
triple bond.> > >.