What is the isoelectric point of glutamic acid (pKa of -CO2H, 2.10; pKa of -CO2H, 4.07; pH of -NH2, 9.47)?
a. 3.08
b. 5.67
c. 6.16
d. 17.28
Question 2
What is the isoelectric point of serine (pKa of -CO2H, 2.21; pKa of -NH2, 9.15)?
a. 5.68
b. 9.94
c. 11.36
d. 20.22