Polypeptides are synthesized from amino acid building blocks. the condensation reactionbetween the growing polypeptide chain and the next amino acid to be added involves the loss of (a)a water molecule.(b)an amino group.(c)a carbon atom.(d)a carboxylic acid group.4-4the variations in the physical characteristics between different proteins are influenced by the overall amino acid compositions, but even more important is the unique amino acid )number.(b)sequence.(c)bond.(d)orie ntation. page 1 of 29