101 public questions tagged with this topic.
Amino acids contain an amino (-NH₂) group and a carboxyl (-COOH) group. They are linked by peptide bonds, not glycosidic bonds. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.
Amino acids contain an amino (-NH₂) group and a carboxyl (-COOH) group and are linked by peptide bonds, not phosphodiester bonds. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.
Amino acids are the building blocks of proteins. They contain nitrogen, a carboxyl group, and are linked by peptide bonds, not glycosidic bonds. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.
Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Zoology section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Zoology portion (Latest NCERT Textbooks for Academic Session 2026-27 - Rationalized Edition for Class XI and XII), Topic: Structural organization, physiology, human health and related concepts as per latest syllabus.
Tryptophan has an indole ring (a benzene ring fused to a pyrrole ring) in its side chain, making it aromatic and hydrophobic. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Relevant Chemistry topic covering principles and examples as per NCERT.
Glycine is a non-essential amino acid because the human body can synthesize it. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.
Glutamic acid has two carboxyl groups: one in the main chain (-COOH) and one in the side chain (-CH₂-CH₂-COOH).
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Proteins - Amino Acids - Essential, Non-Essential and Structure
Cysteine forms disulfide bridges (-S-S-) via oxidation of its sulfhydryl groups, stabilizing protein structure.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Proteins - Amino Acids - Essential, Non-Essential and Structure
Phenylalanine has a side chain with a benzene ring (-CH₂-C₆H₅), making it aromatic.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Proteins - Amino Acids - Essential, Non-Essential and Structure
Tyrosine, with its aromatic phenol side chain, can contribute to protein coloration due to its light-absorbing properties.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Proteins - Amino Acids - Essential, Non-Essential and Structure
Histidine’s imidazole side chain has a pKa near physiological pH (~6.0), allowing it to act as a buffer.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Proteins - Amino Acids - Essential, Non-Essential and Structure
Tryptophan has an indole ring (a benzene ring fused to a pyrrole ring) in its side chain, making it aromatic.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Proteins - Amino Acids - Essential, Non-Essential and Structure
Glycine lacks a chiral carbon because its side chain is a hydrogen atom, making Cα symmetrical.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Proteins - Amino Acids - Essential, Non-Essential and Structure
