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Identify the essential amino acids from below : (A) Valine (B) Proline (C) Lysine (D) Threonine (E) Tyrosine Choose the correct answer from the options given below :

1. (A), (C) and (D) only
2. (A), (C) and (E) only
3. (B), (C) and (E) only
4. (C), (D) and (E) only

Correct answer: (A), (C) and (D) only

Solution

Valine, lysine, and threonine are classified as essential amino acids because the body cannot synthesize them and they must be obtained through diet. Proline and tyrosine, on the other hand, are considered non-essential as the body can produce them.

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