Proteins Differ from One Another Because

Multiple Choice

Proteins differ from one another because:

A) the bonds linking amino acids differ from protein to protein.
B) the sequence of amino acids in the polypeptide chain differs from protein to protein.
C) the number of nucleotides found in each protein varies from molecule to molecule.
D) the tRNA attached to the protein differs from protein to protein.
E) of the length of the mRNA.