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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following dietarily non-essential amino acid becomes dietarily essential in patients of homocystinuria?
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The correct answer is  Cysteine is dietarily not essential since it can be synthesised from the essential amino acid methionine In homocystinuria, methionine to cysteine conversion is affected So,Cysteine becomes essential in diet. Extra edge:- Tyrosine becomes dietarily essential in patients of phenylketonuria.