Question:

Which amino acid from following is NOT synthesized in our body?

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Essential amino acids must be supplied through the diet because the body cannot make them.
Updated On: Nov 13, 2026
  • Tyrosine
  • Tryptophan
  • Glutamine
  • Glycine
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The Correct Option is B

Solution and Explanation

Step 1: Understanding the Concept
Amino acids are essential if the body cannot synthesize them and non-essential if it can.

Step 2: Check the Options
Tyrosine, glutamine and glycine are non-essential and are made in the body.

Step 3: Result
Tryptophan is an essential amino acid, so it must come from food.

Final Answer:
Tryptophan is not synthesized in the body. \[ \boxed{\text{(B) }\text{Tryptophan}} \]
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