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Biomolecules | Revision Notes | Chemistry | Class 12

A Biomolecule is any molecule present in living organisms including large macromolecules such as carbohydrates, proteins, nucleic acids & lipids, and the small molecules such as primary and secondary metabolites & natural products. What are 4 types of Biomolecules that make up the Living Organisms? It includes proteins, lipids, carbohydrates and Read more…

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Biomolecules | Revision Notes | Bology | Class 12

Carbohydrates Classification of carbohydrates: Monosaccharides: Polyhydroxy aldehydes or polyhydroxy ketones which cannot be decomposed by hydrolysis to give simpler carbohydrates.Examples: Glucose, Fructose, Ribose, Arabinose,  Mannose, Gulose etc.. Oligosaccharides: The oligosaccharides (Greek, oligo, few) are carbohydrates which yield a definite number (2-9) of monosaccharide molecules on hydrolysis. Trisaccharides:  yield three monosaccharide molecules on hydrolysis.Examples: raffinose, which Read more…

Lactose | Biomolecules | Class XII

Lactose is a disaccharide that contains units of galactose and glucose. It’s the sugar present in the milk. These biomolecules have a significant role in daily life by providing three requirements, i.e., food (starch), shelter (cellulose) and cloth (cellulose). Carbohydrates belong to optically active compounds with hydroxyl and carbonyl functional groups Read more…

Classification of Carbohydrates | Class XII

Carbohydrates are also known as saccharides (Greek sakcharon means sugar). These are classified into the following three classes depending upon their behaviour towards hydrolysis. 1. Monosaccharides: These are the simplest carbohydrates which cannot be hydrolysed to smaller molecules. Their general formula is (CI-120)n where n = 3-7. 2. Oligosaccharides: (Greek, Read more…