CHEMISTRY TEXTBOOK

Do you know? The symbiotic bacteria in guts of insects called termites have enzymes that can hydrolyse b-1,4- glycosidic linkage ...

R- CH - COOH NH 2 ∝-amino acid (∝-carbon chiral) CH 2 - COOH NH 2 (∝-carbon achiral) Fig. 14.14 : Natural ∝-amino acids COOH H R ...

types as neutral, acidic or basic. Ten ∝-amino acids from this list cannot be synthesised in human body and have to be obtained ...

14.3.2 Peptide bond and protein : Proteins are known to break down into peptides in stomach and duodenum under the influence of ...

level structure of proteins, namely primary, secondary, tertiary and quaternary structure of proteins. a. Primary structure of p ...

∝-Helix : The ∝-helix forms when a polypeptide chain twists into a right handed or clockwise spiral (Fig. 14.19). Some character ...

c. Tertiary structure of proteins : The three-dimensional shape adopted by the entire polypeptide chain of a protein is called i ...

14.3.5 Denaturation of proteins High temperature, acid, base and even agitation can disrupt the noncovalent interactions respons ...

The products leave the active site and the enzyme is then ready to act as catalyst again. Formation of enzyme-substrate complex ...

HO-CH 2 H H O H H OH OH OH HO-CH 2 H H O H H HO H OH or or HO-CH 2 O OH OH OH 1 (^432) (^5) HO-CH (^2) O OH OH 1 3 2 4 5 No OH a ...

HO-CH 2 O OHOH OH N N H NH 2 O + HO-CH 2 O OH OH N N NH 2 O 1' 3' 2' 4' 5' (D - ribose) (a ribonucleoside) HO-CH 2 O OH OH + N N ...

} Phosphate Sugar Phosphate Sugar Phosphate base Sugar base 3' Sugar-phosphate backbone base 5' (a) P S P S P S P S B B B B (b) ...

Remember... A nucleic acid contains a backbone consisting of alternating sugar and phosphate groups. Backbone of all types of D ...

Select the most correct choice. i. CH 2 OH-CO-(CHOH) 4 -CH 2 OH is an example of a. Aldohexose b. Aldoheptose c. Ketotetrose d ...

Answer the following i. Some of the following statements apply to DNA only, some to RNA only and some to both. Lable them acco ...

INTRODUCTION TO POLYMER CHEMISTRY aspects of organic polymers. You have learnt in Chapter 14 about carbohydrates, proteins and ...

Fig. 15.1 : Different chain configurations of Use your brain power polymers Differentiate between natural and synthetic polymer ...

a. Addition polymerization (or chain growth polymerization) b. Condensation polymerization (or step growth polymerization) c. Ri ...

Remember... Repeating units of condensation polymer do not have the same elemental composition as that of monomer. In this react ...

forces the fibres are crystalline in nature. For example : polyamides (nylon 6, 6), polyesters (terylene), etc. c. Thermoplastic ...