Identify the amino acids containing nonp

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Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Biomolecules

Question:

Identify the amino acids containing nonpolar, aliphatic R groups.

Options:

Serine, threonine, cysteine

Lysine, arginine, histidine

Glycine, alanine, leucine

Phenylalanine, tyrosine, and tryptophan

Correct Answer:

Glycine, alanine, leucine

Explanation:

Glycine: H₃N⁺– CH₂–COO^–
Alanine: H₃N⁺–CH(CH₃)–COO^–
Leucine: H₃N⁺–CH(C₄ H₉)–COO^–.