TLS Online TPP Program

#Question id: 149


The pKaʹs of the side chain group and the α-carboxyl group of glutamate are 4.1 and 2.1, respectively. Which statement accounts for this difference?

#XL - T Zoology
  1. The side chain has more possible resonance structures.

  2. The α-carboxyl group has less steric hindrance and is therefore ionized more easily.

  3. The side chain is a different functional group than the α-carboxyl group.

  4. The α-carboxyl group is closer to the α-amino group than the side chain is.