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:
Solution
<p>The nine essential amino acids that must be obtained from the diet are:</p>
<p><p>Histidine</p></p>
<p><p>Isoleucine</p></p>
<p><p>Leucine</p></p>
<p><p>Lysine</p></p>
<p><p>Methionine</p></p>
<p><p>Phenylalanine</p></p>
<p><p>Threonine</p></p>
<p><p>Tryptophan</p></p>
<p><p>Valine</p></p>
<p>From the provided list:</p>
<p><p>Valine (A) is essential.</p></p>
<p><p>Proline (B) is non-essential.</p></p>
<p><p>Lysine (C) is essential.</p></p>
<p><p>Threonine (D) is essential.</p></p>
<p><p>Tyrosine (E) is non-essential (it is considered conditionally essential, but under normal conditions it is non-essential).</p></p>
<p>Thus, the essential amino acids among those listed are Valine, Lysine, and Threonine.</p>
<p>So the correct answer is:</p>
<p>$\textbf{Option A: (A), (C) and (D) only}$</p>
About this question
Subject: Chemistry · Chapter: Biomolecules · Topic: Carbohydrates
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