Verified Solution • 2025–26 Session moderate

QJEEM23Ch8c32: JEE Main 2023 Chemistry - Class 12 JEEM23Ch8c32 Solution: The naturally occurring amino acid that contains only one basic …

The naturally occurring amino acid that contains only one basic functional group in its chemical structure is

Multiple Choice Options

  • A asparagine
  • B arginine
  • C histidine
  • D lysine

Step-by-Step Verified Solution

Among the given options, arginine, histidine, and lysine are all basic amino acids because they contain amino (-NH2) and imino (-NH=) functional groups that can accept a proton (H+) to become positively charged.

Asparagine, on the other hand, contains an amide (-CONH2) functional group instead of an imino group. This functional group is not basic because it does not have a proton that can be easily removed. Therefore, the answer is: asparagine.

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