Question

Which of the following is/are cellulose?
(i) Paper
(ii) Cotton fibre
(iii) Chitin
(iv) Glycogen

A) i and ii
B) i and iii
C) i, iii and iv
D) iii and iv
E) iii

Answer 1

Cellulose is a molecule made up of hundreds, if not thousands, of carbon, hydrogen, and oxygen atoms. Cellulose is the major component of plant cell walls, which helps plants stay stiff and upright. Although humans are unable to digest cellulose, it is an important source of fibre in the diet.

Complete answer:
A paper-based product typically contains $90 - 99\%$ cellulose fibres, which are the most essential component impacting end-use qualities and the principal structural element. The chemical and physical qualities of paper products are influenced by a network of self-bonding cellulose fibres within the network structure.

Cellulose is a molecule made up of hundreds, if not thousands, of carbon, hydrogen, and oxygen atoms. Cellulose is the major component of plant cell walls, which helps plants stay stiff and upright. Although humans are unable to digest cellulose, it is an important source of fibre in the diet.

Chitin is a polysaccharide that contains nitrogen. It's a crucial component of fungi's cell walls. It is the most important component of an arthropod's exoskeleton. It's an N-acetylglucosamine polymer with a lengthy chain. It's a type of glucose that has been changed. Between glucosamine and acetic acid, it forms an amide. ${C_8}{H_{15}}N{O_6}$ is its molecular formula.

Glycogen is the type of glucose that animal cells store. In muscle cells, excess glucose in the circulation is converted to glycogen. The creation of glycogen is referred to as glycogenesis. Glycogen is broken down to glucose and channelled into the bloodstream through glycogenolysis during muscle exercise when extra energy is required.

Therefore the correct answer is option ‘A’.

Note: Cellulose is a key component of plant cell walls. It helps to keep the cell wall tight and strong. Animals that can digest cellulose may use this polysaccharide as a source of energy. Due to a lack of enzymes, humans are unable to digest cellulose.