When the amino acid alanine (R-group is CH3) is added to a solution with a pH of 7.3, alanine becomes

When the amino acid alanine (R-group is CH3) is added to a solution wi

1.	When the amino acid alanine (R-group is CH₃) is added to a solution with a pH of 7.3, alanine becomes
A.	a cation
B.	nonpolar
C.	a zwitterions
D.	an isotope
Answer» D. an isotope