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Biomolecules question

2023 · 6 Apr · Shift 2 · Q13
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Biomolecules question

2023 · 6 Apr · Shift 2 · Q13

JEE MainChemistryBiomoleculesMCQ+4 / −1

Match List I with List II

LIST I
Natural Amino Acid		 LIST II
One Letter Code
A. Arginine I. D
B. Aspartic acid II. N
C. Asparagine III. A
D. Alanine IV. R

Choose the correct answer from the options given below:

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

Correct answer: C

  1. We need to match each amino acid with its standard one-letter code.

  2. Recall the one-letter codes:

    • Arginine →R\rightarrow R→R
    • Aspartic acid →D\rightarrow D→D
    • Asparagine →N\rightarrow N→N
    • Alanine →A\rightarrow A→A

  3. Now match with List II:

    • A.A.A. Arginine →R→IV\rightarrow R \rightarrow \text{IV}→R→IV
    • B.B.B. Aspartic acid →D→I\rightarrow D \rightarrow \text{I}→D→I
    • C.C.C. Asparagine →N→II\rightarrow N \rightarrow \text{II}→N→II
    • D.D.D. Alanine →A→III\rightarrow A \rightarrow \text{III}→A→III

  4. Therefore the correct matching is: A−IV,  B−I,  C−II,  D−IIIA-\text{IV},\; B-\text{I},\; C-\text{II},\; D-\text{III}A−IV,B−I,C−II,D−III

  5. Compare with options:

    • Option A: A−IV,B−I,C−III,D−IIA-\text{IV}, B-\text{I}, C-\text{III}, D-\text{II}A−IV,B−I,C−III,D−II →\rightarrow→ incorrect
    • Option B: A−III,B−I,C−II,D−IVA-\text{III}, B-\text{I}, C-\text{II}, D-\text{IV}A−III,B−I,C−II,D−IV →\rightarrow→ incorrect
    • Option C: A−IV,B−I,C−II,D−IIIA-\text{IV}, B-\text{I}, C-\text{II}, D-\text{III}A−IV,B−I,C−II,D−III →\rightarrow→ correct
    • Option D: A−I,B−III,C−IV,D−IIA-\text{I}, B-\text{III}, C-\text{IV}, D-\text{II}A−I,B−III,C−IV,D−II →\rightarrow→ incorrect

Hence, the correct answer is Option C.

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