Women that have PKU must avoid the essential amino acid phenylalanine and consume a diet low in protein because:
a. they lack enough stomach acid (HCl) to break down dietary proteins, including phenylalanine.
b. they are allergic to phenylalanine and other protein-rich foods.
c. they lack the enzyme necessary to convert phenylalanine to tyrosine.
d. phenylalanine and protein-rich foods cause an accumulation of acid to build up in the blood.
e. None of the above is correct.
c
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