"phenylalanine is an amino acid needed by the body and must be ingested through the diet. therefore, this is an example of a(n) amino acid."

First described the system of fingerprint ridges and spirals, which eventually were used for fingerprinting. a.) fare and fidelis’s pathology b.) dr. calvin goddard c.) hans gross d.) marcelo malpighi e.) leeuvenhoek’s microscope