Biomolecules
ICSE · Class 12 · Chemistry
Summary of Biomolecules for ICSE Class 12 Chemistry. Key concepts, important points, and chapter overview.
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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
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