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Biomolecules — Chapter Summary

ICSE · Class 12 · Chemistry

Summary of Biomolecules for ICSE Class 12 Chemistry. Key concepts: Carbohydrates are polyhydroxy, Naturally occurring glucose is and Disaccharides are.

104 questions42 flashcards16 formulas & key relations5 concepts

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Overview

Biomolecules are complex organic substances that form the basis of life and support growth, maintenance, and metabolism in living systems. The major biomolecules are carbohydrates, proteins, lipids, nucleic acids, vitamins, enzymes, and hormones. Their structures and reactions explain how living org

Key Concepts

Carbohydrates are polyhydroxy aldehydes or polyhydroxy

Carbohydrates are polyhydroxy aldehydes or polyhydroxy ketones, or large polymeric molecules which on hydrolysis yield polyhydroxy aldehydes and polyh

Naturally occurring glucose is α

Naturally occurring glucose is α-D-glucose, an aldohexose with formula C6H12O6. It is a colourless crystalline solid, soluble in water, and the most a

Disaccharides are carbohydrates that on hydrolysis

Disaccharides are carbohydrates that on hydrolysis give two monosaccharide units. Sucrose is made of α-D-glucose and β-D-fructose joined by an α,β-gly

Polysaccharides are carbohydrates that on hydrolysis

Polysaccharides are carbohydrates that on hydrolysis give a large number of monosaccharide units. Starch is the main storage polysaccharide of plants

Amino acids are the building units

Amino acids are the building units of proteins and contain both amino and carboxyl groups. Neutral amino acids have one -NH2 and one -COOH group. In a

Learning Objectives

  • Understand the meaning and importance of biomolecules in living systems
  • Classify carbohydrates, proteins, enzymes, hormones, nucleic acids, and vitamins
  • Recall the structures, properties, and reactions of important biomolecules
  • Explain glucose, fructose, sucrose, maltose, lactose, starch, cellulose, and glycogen
  • Describe amino acids, peptide bonds, protein structure, and denaturation

Frequently Asked Questions

What are the important topics in Biomolecules for ICSE Class 12 Chemistry?
Key topics in Biomolecules include Biomolecules and Carbohydrates, Important Monosaccharides: Glucose and Fructose, Disaccharides: Sucrose, Maltose, and Lactose, Polysaccharides: Starch, Cellulose, and Glycogen. Study these first, then practise questions on each for the ICSE Class 12 board exam.
How should I revise Biomolecules for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 104 practice questions on Biomolecules. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Biomolecules

All ICSE Class 12 Chemistry Chapter Summary

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