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JEE Main · 2020 · 05 Sep 2020 · Shift 1 · Biomolecules

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Which of the following is not an essential amino acid?
  1. (A)Valine
  2. (B)Tyrosine✓ Correct
  3. (C)Leucine
  4. (D)Lysine

Answer: (B)

Solution

Essential amino acids are those the body cannot make and must take from food. Tyrosine is the exception among these, because it is synthesised in the body from phenylalanine, whereas valine, leucine and lysine must all be supplied by the diet.

JEE Main · 2020 · 05 Sep 2020 · Shift 1 · Single correct option

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