Biomolecules and Polymers Test - 1

Neoprene is an addition polymer.

Chain growth polymerisation is a polymerisation technique where unsaturated monomer molecules add on to a growing polymer chain one at a time. Teflon is an example of chain growth polymer.

Reducing sugars are those sugars which can be oxidized by mild oxidising agents like Tollen's reagent indicating the presence of a free aldehydic group. Sucrose is a non-reducing sugar as both the anomeric carbons of sucrose are involved in the glycosidic linkage and cannot open up into the open chain structure and react with the oxidising reagent. Hence, sucrose is a non-reducing sugar and can be used to preserve jams and squashes as it does not get oxidised easily.

Molisch's test is a sensitive chemical test for detecting the presence of carbohydrates.

In α-helix structure, proteins are stabilised by hydrogen bonds. 

DNA contains thymine instead of uracil.

The nitrogenous bases in DNA are:

Adenine and thymine, which are purines

Cytosine and guanine, which are pyrimidines

The RNA molecule contains uracil instead of thymine.