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Match List-I with List-II. List-I Amino acid structure / feature List-II One Letter Code (A) CH ₃ CH ( OH ) CH ( NH ₂) COOH (I) W (B) Ph - CH ₂ CH ( NH ₂) COOH (II) F (C) 4 -HO - C ₆ H ₄- CH ₂ CH ( NH ₂) COOH (III) Y (D) Amino acid with an indole ring (IV) T Choose the correct answer from the options given below:

Options

  1. A(A)-(IV), (B)-(II), (C)-(III), (D)-(I)
  2. B(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
  3. C(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
  4. D(A)-(IV), (B)-(I), (C)-(III), (D)-(II)

Correct answer

A. (A)-(IV), (B)-(II), (C)-(III), (D)-(I)

Step-by-step solution

First, identify the amino acids from their given structures or features: (A) CH ₃ CH ( OH ) CH ( NH ₂) COOH is Threonine. (B) Ph - CH ₂ CH ( NH ₂) COOH is Phenylalanine. (C) 4 -HO - C ₆ H ₄- CH ₂ CH ( NH ₂) COOH is Tyrosine. (D) The amino acid containing an indole ring in its side chain is Tryptophan. Next, recall their standard one-letter IUPAC codes: Threonine = T (IV) Phenylalanine = F (II) Tyrosine = Y (III) Tryptophan = W (I) Matching these gives (A)-(IV), (B)-(II), (C)-(III), (D)-(I). Answer: (A)-(IV), (B)-(I

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