Chapter 17 of 32
Revision Notes
Biomolecules — Revision Notes
IISER Aptitude Test · Biology
Quick revision notes for Biomolecules — key concepts, formulas, and definitions for IISER Aptitude Test Biology preparation.
Interactive on Super Tutor
Studying Biomolecules? Get the full chapter — free.
Practice questions, revision notes, formula sheet and AI doubt-solver — built for IISER Aptitude Test Biology.
Super Tutor
Learn better with visuals Super Tutor has hundreds of illustrations like this across every chapter — all free to try.
Get startedRevision Notes — Biomolecules
Key concepts, formulas, and definitions from Biomolecules for IISER Aptitude Test Biology preparation.
Key Topics to Revise
1
Chemical Analysis of Living Tissues
- Living tissues contain the same elements as Earth's crust but in different proportions
- Human body composition: Oxygen (65%), Carbon (18.5%), Hydrogen (10.5%), Nitrogen (3.3%), others (2.7%)
- Chemical analysis involves treating tissue with trichloroacetic acid to separate acid-soluble and acid-insoluble fractions
2
Amino Acids and Proteins
- Amino acids are α-amino acids with amino and carboxyl groups on the same carbon
- 20 proteinaceous amino acids are used for protein synthesis
- Classification: Non-polar, polar uncharged, positively charged, negatively charged
3
Carbohydrates
- General formula: Cₙ(H₂O)ₙ, though some exceptions exist
- Classification: Monosaccharides, oligosaccharides, polysaccharides
- Monosaccharides can be aldoses (aldehyde group) or ketoses (ketone group)
4
Lipids
- Insoluble in water but soluble in non-polar organic solvents
- Composed mainly of carbon, hydrogen, and small amounts of oxygen
- Can form emulsions - colloidal solutions in water
Get complete revision notes with diagrams and examples — continue in Super Tutor
Key Concepts
Living tissues can be analyzed byCarbohydrates follow the general formula Cn(H2O)nAmino acids are αLipids are fatty acid estersNucleotides consist of a nitrogenous base
Frequently Asked Questions
What topics are covered in Biomolecules for IISER Aptitude Test?
Biomolecules is an important chapter in IISER Aptitude Test Biology. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Chemical Analysis of Living Tissues, Amino Acids and Proteins, Carbohydrates, Lipids.
How important is Biomolecules for IISER Aptitude Test?
Biomolecules is a frequently tested chapter in IISER Aptitude Test Biology. Questions from this chapter appear regularly in previous year papers. There are 84 practice questions available for this chapter.
How to prepare Biomolecules for IISER Aptitude Test?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.
More resources for Biomolecules
For IISER Aptitude Test aspirants
Get the full Biomolecules chapter — for free.
Practice questions, revision notes, formula sheet and AI doubt-solver for IISER Aptitude Test Biology.