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Match List-I with List-II. List-I One Letter Code List-II Side-chain functional group (A) R (I) Imidazole ring (B) H (II) Carboxyl group (C) Q (III) Guanidino group (D) E (IV) Amide group Choose the correct answer from the options given below:

Options

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

Correct answer

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

Step-by-step solution

First, identify the amino acids from their one-letter codes: R stands for Arginine. H stands for Histidine. Q stands for Glutamine. E stands for Glutamic acid. Next, identify the characteristic functional groups present in their side chains: Arginine (R) contains a strongly basic guanidino group. (III) Histidine (H) contains an imidazole ring. (I) Glutamine (Q) is the amide derivative of glutamic acid and contains an amide group. (IV) Glutamic acid (E) is an acidic amino acid containing a carboxyl group in its side

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