Cellulose: Structure and Function

Cellulose is a complex carbohydrate and the most abundant organic compound on Earth. It is a major structural component of plant cell walls, providing rigidity and support to plant cells. Cellulose is made up of long chains of glucose molecules linked together, forming a tough, fibrous material.

Structure of Cellulose

Cellulose molecules are composed of linear chains of beta-glucose monomers. These chains are held together by hydrogen bonds, forming a strong and stable structure. The linear arrangement of the glucose monomers allows cellulose to form microfibrils, which further aggregate to form the tough, rigid cell wall of plants.

Function of Cellulose

Cellulose plays a crucial role in providing structural support to plants. It gives plant cells their shape and rigidity, allowing them to stand upright and support the weight of the plant. Additionally, cellulose also provides protection against external stressors and pathogens, contributing to the overall strength and durability of plants.

Study Guide

1. What is cellulose?

Cellulose is a complex carbohydrate and the most abundant organic compound on Earth. It is a major structural component of plant cell walls, providing rigidity and support to plant cells.

2. Describe the structure of cellulose.

Cellulose molecules are composed of linear chains of beta-glucose monomers held together by hydrogen bonds, forming a tough, fibrous material.

3. What is the function of cellulose in plants?

Cellulose provides structural support to plants, giving plant cells their shape and rigidity, and protecting them against external stressors and pathogens.

Understanding the structure and function of cellulose is essential for comprehending the importance of this compound in the biology of plants and the ecosystem as a whole.