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Old 11-17-2012
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Biochemistry Phenylketouria and amino acid supplementation

A newborn with phenylketonuria is started on a strict phenyalanine restricted diet. Which of following amino acids must be supplemented to avoid negative nitrogen balance?
A Arginine
B Isolucine
C lysine
D Tryptophan
D Tyrosine
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Old 11-17-2012
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You have 2 Ds...So I will go with D2 which is Tyrosine.

So basically E. Tyrosine.

Tyrosine is essential in PKU.
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Old 11-17-2012
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Quote:
Originally Posted by medhelp View Post
A newborn with phenylketonuria is started on a strict phenyalanine restricted diet. Which of following amino acids must be supplemented to avoid negative nitrogen balance?
A Arginine
B Isolucine
C lysine
D Tryptophan
D Tyrosine
D Tyrosine (It should be E i think)
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Old 11-17-2012
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Default my answer :)

D Tyrosine
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Old 11-18-2012
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Default E?

Tyrosine!!
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Old 11-18-2012
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Tyrosine becomes essential...
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