in many modern hospitals, the blood of newborn infants is routinely screened for high levels of…

in many modern hospitals, the blood of newborn infants is routinely screened for high levels of phenylalanine hydroxylase. phenylalanine. all of these phenylpyruvic acid.

in many modern hospitals, the blood of newborn infants is routinely screened for high levels of phenylalanine hydroxylase. phenylalanine. all of these phenylpyruvic acid.

Answer

Brief Explanations:

Newborns are screened for phenylketonuria (PKU), a disorder where phenylalanine cannot be properly metabolized. High - levels of phenylalanine are indicative of PKU. Phenylalanine hydroxylase is the enzyme that metabolizes phenylalanine and its levels are not what is screened for directly. Phenylpyruvic acid is a by - product of abnormal phenylalanine metabolism and while related, the primary screening is for high phenylalanine levels.

Answer:

B. phenylalanine