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Biomolecules question

2023 · 8 Apr · Shift 2 · Q10
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Biomolecules question

2023 · 8 Apr · Shift 2 · Q10

JEE MainChemistryBiomoleculesMCQ+4 / −1

Match List I with List II

LIST I
Natural amino acid		 LIST II
One letter code
A. Glutamic acid I. Q
B. Glutamine II. W
C. Tyrosine III. E
D. Tryptophan IV. Y

Choose the correct answer from the options given below:

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

Correct answer: D

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

  2. Recall the standard one-letter codes:

    • Glutamic acid →E\rightarrow E→E
    • Glutamine →Q\rightarrow Q→Q
    • Tyrosine →Y\rightarrow Y→Y
    • Tryptophan →W\rightarrow W→W

  3. Now match with List II:

    • I =Q= Q=Q
    • II =W= W=W
    • III =E= E=E
    • IV =Y= Y=Y

  4. Therefore:

    • AAA (Glutamic acid) →\rightarrow→ III
    • BBB (Glutamine) →\rightarrow→ I
    • CCC (Tyrosine) →\rightarrow→ IV
    • DDD (Tryptophan) →\rightarrow→ II

  5. So the correct matching is: A-III,  B-I,  C-IV,  D-IIA\text{-III},\; B\text{-I},\; C\text{-IV},\; D\text{-II}A-III,B-I,C-IV,D-II

  6. Checking the options:

    • Option A: AAA-III, BBB-IV, CCC-I, DDD-II →\rightarrow→ incorrect
    • Option B: AAA-IV, BBB-III, CCC-I, DDD-II →\rightarrow→ incorrect
    • Option C: AAA-II, BBB-I, CCC-IV, DDD-III →\rightarrow→ incorrect
    • Option D: AAA-III, BBB-I, CCC-IV, DDD-II →\rightarrow→ correct

Hence, the correct answer is Option D.

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