Question:
Which one of the following is not an essential amino acid?
Which one of the following is not an essential amino acid?
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When studying essential amino acids, remember that tyrosine is non-essential because it can be synthesized from phenylalanine, unlike the other amino acids listed here.
Updated On: Mar 12, 2025
- Lysine
- Tyrosine
- Threonine
- Tryptophan
- Methionine
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The Correct Option is B
Solution and Explanation
Amino acids can be classified into essential and non-essential amino acids. Essential amino acids cannot be synthesized by the body and must be obtained through the diet. Non-essential amino acids, on the other hand, can be synthesized by the body.
The amino acids listed in the options are:
- Lysine: Essential
- Tyrosine: Non-essential (because it can be synthesized from phenylalanine, which is essential)
- Threonine: Essential
- Tryptophan: Essential
- Methionine: Essential
Since tyrosine is non-essential, the correct answer is (B) Tyrosine.
The amino acids listed in the options are:
- Lysine: Essential
- Tyrosine: Non-essential (because it can be synthesized from phenylalanine, which is essential)
- Threonine: Essential
- Tryptophan: Essential
- Methionine: Essential
Since tyrosine is non-essential, the correct answer is (B) Tyrosine.
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