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nmdcat.online June 27, 2026

Among the following amino acids, the one classified as non-essential for human adults is

A. Lysine
B. Phenylalanine
C. Alanine
✓
D. Valine

📝 Explanation

Non-essential amino acids are those the human body can synthesize de novo. Alanine can be produced from pyruvate. Lysine, phenylalanine, and valine are essential amino acids that cannot be synthesized and must be obtained from the diet.

📖 Additional Information

  • Lysine
  • Phenylalanine
  • Alanine
  • Valine

Non-essential amino acids are those the human body can synthesize de novo. Alanine can be produced from pyruvate. Lysine, phenylalanine, and valine are essential amino acids that cannot be synthesized and must be obtained from the diet.

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