Question 4

Aspartic acid

Question options:

a)	has three pK's.

b)	one pK is for the amino group.

c)	one pK is for the R group carboxyl.

d)	a) and b).

e)	all of the above

Question 5

Tyrosine

Question options:

a)	R group has aromatic character.

b)	R group can form H-bonds with another molecule.

c)	R group is often converted to an ion at pH 10.

d)	a) and b).

e)	all of the above.