Multiple Choice
Why does phenylalanine accumulate in patients with phenylketonuria?
A) They lack an enzyme to break down phenylalanine
B) They lack an enzyme to produce phenylalanine
C) They produce too much phenylalanine
D) They lack an inhibitor of an enzyme to break down phenylalanine
E) They eat more phenylalanine than most other people
Correct Answer:

Verified
Correct Answer:
Verified
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