Biomolecules

14.7

When a nucleotide from DNA containing thymine is hydrolyzed β-D-2 deoxyribose and phosphoric acid are obtained.

14.6

Vitamin C (ascorbic acid due to extensive –H bonding with water due to the presence of –OH group) is a water-soluble vitamin in contrast to vitamin A, D, E and K which are fat soluble. Also, humans cannot synthesize it due to the lack of specific enzyme and it is rapidly absorbed from the intest

14.5

Eggs contain protein and proteins are a polymer in amino acids. When an egg is boiled the protein present inside the egg is denatured (the process of loss of biological activity of protein like their ability of –H bonding when subjected to a physical change like a change in temperature, pH) and

14.4 

Amino acids are organic compounds containing amine (basic) and carboxyl (acidic) functional group with a specific side chain. Both acidic and basic group are present in the same molecule. In, aqueous solution carboxyl group can lose a proton (H⁺) and amino group can accept a proton (H⁺) gi

14.3 

D-glucose reacts with hydroxylamine (NH₂OH) to form oxime due to the presence of the aldehyde functional group (-CHO). This is due to the cyclic structure of glucose which forms an open chain structure in an aqueous medium, which then reacts to give an oxime.

But in case of pentaacetate of

14.2

Lactose is a disaccharide carbohydrate (made up of two monosaccharide units) composed of β-D-galactose and β-D-glucose units. Hydrolysis breaks the glycosidic bond converting sucrose into β-D- galactose and β-D-glucose.

NOTE: But however, this reaction is so slow that it takes years for the solut

14.1 

Glucose and sucrose are carbohydrates (optically active polyhydroxy aldehydes or ketones). 
Structure of glucose:

Structure of sucrose:

As you can see both the compounds have five –OH and eight –OH groups respectively. These –OH groups are responsible for the extensive hydrogen bonding w

Students ask this question many a times that wehter NCERT are enough or they should follow other reference books. Students should use NCERT books for CBSE Class 12 board exams, NCERT is more than sufficient for mastering the Biomolecules chapter. All key concepts, definitions, and reactions asked in

Chapter 10 Biomolecules of Class 12 Chemistry includes several important topics which are frequently asked in the state and cbses board exams. The most important topics in the Biomolecules chapter include the classification and structure of carbohydrates (monosaccharides, disaccharides, polysac

Biomolecules are organic compounds essential to life, found in all living organisms. Biomolecules include carbohydrates, proteins, lipids, nucleic acids, enzymes, and vitamins.

NCERT Class 12 Chemistry chapter 10 Biomolecules covers the molecular basis of life, including the structure, types, an