What is the practical limit on the use of carboxypeptidase in providing sequence information?

A) two residues on the C-terminal end
B) two residues on the N-terminal end
C) three residues on the N-terminal end
D) three residues on the C-terminal end
E) six residues on the N-terminal end

An atom that has gone from an oxidation state of -2 to -1 in a reaction has undergone what process?

A) It has oxidized.
B) It has reduced.
C) It has become more acidic.
D) It has become more basic.