Which groups are identical in all amino acids? (points : 1)
amino and r groups

only r groups

amino and carboxyl groups

only carboxyl groups

The answer is


only carboxyl groups (=C=OO-

Ithink the answer is a or d.

You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom.