Which of the following cannot be synthesized from tyrosine in the body?
Correct answer: D. phenylalanine
Tyrosine is a precursor for adrenaline, dopamine, and thyroxine but not for phenylalanine.
NCERT Biology Class 11, Chapter 19
Which of the following cannot be synthesized from tyrosine in the body? NEET Biology MCQ
Last updated: July 30, 2026
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