What Kind(s)of Modifications Are Made in Proteins as They Move

Multiple Choice

What kind(s) of modifications are made in proteins as they move through the Golgi complex?

A) The protein's carbohydrates are modified by a series of stepwise enzymatic reactions.
B) Amino acids can be added to either end of the polypeptide chain.
C) Amino acids in the proteins may be chemically altered into nucleic acids.
D) Small segments of amino acids can be added into the center of an existing protein.
E) All of these are correct.