In an individual who lacks the enzyme phenylalanine hydroxylase, which of the following non-essential amino acids becomes essential in the diet?

Question

Quizplus · Accepted Answer

Phenylalanine hydroxylase is responsible for converting phenylalanine into tyrosine. In individuals who lack this enzyme, phenylalanine cannot be converted into tyrosine, resulting in a deficiency of tyrosine. Therefore, tyrosine becomes an essential amino acid in their diet.

In an Individual Who Lacks the Enzyme Phenylalanine Hydroxylase, Which