BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Fungi initially evolved in the primitive seas, using chitin as the main polysaccharide of the cell wall, as well as arthropods.

Detailed explanation-2: -Chitin is the most abundant aminopolysaccharide polymer occurring in nature, and is the building material that gives strength to the exoskeletons of crustaceans, insects, and the cell walls of fungi.

Detailed explanation-3: -Chitin, a biopolymer of N-acetylglucosamine with some glucosamine, is the main component of the cell walls of fungi, the exoskeletons of arthropods such as crustaceans and insects, the radulas of mollusks and the beaks of cephalopods.

Detailed explanation-4: -Chitin is the second most abundant biodegradable polymer produced in nature after cellulose. It is an acetylated polysaccharide composed of N-acetyl-d-glucosamine groups linked by (1→4) linkages and exists as ordered crystalline microfibrils shown in Fig.