BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Chemically, chitin is closely related to chitosan (a more water-soluble derivative of chitin). It is also closely related to cellulose in that it is a long unbranched chain of glucose derivatives. Both materials contribute structure and strength, protecting the organism.

Detailed explanation-2: -Chitin and cellulose are almost similar polysaccharide compounds; cellulose contains a hydroxyl group, whereas chitin contains an acetamide group.

Detailed explanation-3: -The correct answer is option C. Cellulose, on the other hand, is the main component of the plant cell wall. Second, chitin and cellulose have similar structures. Both are made up of long, unbranched chains of glucose subunits bonded together via glycosidic bonds.

Detailed explanation-4: -As a long-chain, linear biopolymer of N-acetylglucosamine units joined by -1, 4 linkages, chitin has a chemical structure similar to cellulose. N-acetylglucosamine units are also present in the polysaccharide portion of the peptidoglycan in bacterial cell walls (Chapter 5).

Detailed explanation-5: -The structure of chitin is comparable to cellulose, forming crystalline nanofibrils or whiskers. It is functionally comparable to the protein keratin.