JEE Main 2025 — Biomolecules Question with Solution
From: JEE Main 2025 (Online) 29th January Evening Shift
Question
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:
Choose an option
Show full solutionCorrect option: A
(A), (C) and (D) only
Step-by-step explanation
The nine essential amino acids that must be obtained from the diet are:
Histidine
Isoleucine
Leucine
Lysine
Methionine
Phenylalanine
Threonine
Tryptophan
Valine
From the provided list:
Valine (A) is essential.
Proline (B) is non-essential.
Lysine (C) is essential.
Threonine (D) is essential.
Tyrosine (E) is non-essential (it is considered conditionally essential, but under normal conditions it is non-essential).
Thus, the essential amino acids among those listed are Valine, Lysine, and Threonine.
So the correct answer is:
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This is a previous-year question from JEE Main 2025, covering the Biomolecules chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.