Question

Which of the following is the monomer of cellulose?
A. $\beta -D-\text{glucose}$
B. Amylose
C. Amylopectin
D. Glycogen

Answer 1

Hint: Cellulose is the main chemical that forms the important structure of plants; it is the most abundantly found organic macromolecule on Earth. Cellulose is extremely rigid that gives great strength to the plant body; it protects the inner parts of plant cells.
There are $2\ \text{to}\ 7$ monomens in a cellulose $\beta $-glucose the monomer unit of cellulose.

Complete step by step answer:
The chemical formula for cellulose is ${{({{\text{C}}_{6}}{{\text{H}}_{10}}{{\text{O}}_{5}})}_{n}},$ a polymerization reaction which consists ‘$n$’ number of glucose which we called ‘monomers’ to the form a polymer called ‘cellulose’. They are linearly linked by $\beta \ 1-4$ glycosidic bonds.
As we all are familiar with carbohydrates, our meal has a large content of carbohydrates like grains, cereals, fruits and vegetables etc. The main function of carbohydrates is to provide energy to do our day to day work.
The chemical for carbohydrate is ${{(\text{C}{{\text{H}}_{2}}\text{O})}_{n}}$. They are classified in three sub-types:
Monosaccharides
Disaccharides
Polysaccharides
Polysaccharides are carbohydrate polymers which consist of hundreds to thousands monosaccharides units of glucose. Cellulose is one of the examples of polysaccharides.
In cellulose, monomers of glucose are linearly linked in unbranched chains by $\beta \ 1-4$ glycosidic linkages.
We have the cellulose structure in the following diagram.

Cellulose
As shown in the above figure, every otha glucose monomer in cellulose is tightly packed as extended linear and long chains. It helps cellulose to become more rigid and have high tensile strength, so they can help the plant body. It gives remarkable strength to plant cells. It also helps in absorption of water.

Additional Information:
The chemical formula of cellulose is ${{({{\text{C}}_{6}}{{\text{H}}_{10}}{{\text{O}}_{5}})}_{n}}.$ It’s molar maps is $162.1406$ gmol per glucose unit. It has a texture like white powder. It is insoluble in water.
The examples of cellulose are cotton, linen, Rayon, Bamboo, Hemp etc.
Cellulose can be extracted from plant fibres wings same as the chemical and mechanical methods.

Note: Cellulose is a long chain polymer of glucose monomers linked by glycosidic linkages. As the plant adds one glucose molecule to the polymer, one molecule of water is released. Cellulose polymerisation occurs as a plant gracose and creates new cells.