Question

Match List - I (Structure of Amino acid) with List - II (Name of the Amino acid):

• A. A-IV, B-III, C-II, D-I
• B. A-III, B-IV, C-I, D-II
• C. A-IV, B-III, C-I, D-II
• D. A-III, B-IV, C-II, D-I

Hint:

Hydroxyl = Serine; Amide = Asparagine/Glutamine; Acid = Aspartic/Glutamic acid.

Answer 1

The Correct Option is A

Step 1: Concept Each amino acid has a unique side chain (R-group) attached to the $\alpha$-carbon.

Step 2: Meaning Identifying the functional groups in the side chain allows for naming the specific amino acid.

Step 3: Analysis Structure A has a $-\text{CH}_{2}\text{OH}$ group, which is Serine (IV). Structure B has an amide side chain ($-\text{CH}_{2}\text{CONH}_{2}$), which is Asparagine (III). Structure C has a branched hydrocarbon chain, characteristic of Isoleucine (II). Structure D has a carboxylic acid side chain, identifying it as Glutamic Acid (I).

Step 4: Conclusion The correct matching is A-IV, B-III, C-II, D-I. Final Answer: (A)