Cellulose is polymer of

Options

A. `alpha`-D Glucose
B. `beta`-D Glucose
C. `alpha`- D Fructose
D. `beta`- D Fructose

Answer

**Step-by-Step Solution:**

1. **Understanding Cellulose**: Cellulose is a type of carbohydrate that is classified as a polysaccharide. It is primarily found in the cell walls of plants.

2. **Identifying the Monomer**: The monomer (building block) of cellulose is glucose. However, it is specifically the beta-D-glucose form that is used to form cellulose.

3. **Polymer Formation**: Cellulose is formed by linking multiple beta-D-glucose units together. This process involves the formation of glycosidic bonds.

4. **Type of Linkage**: The specific type of bond that connects the beta-D-glucose units in cellulose is known as the beta 1,4 glycosidic linkage. This type of linkage is crucial for the structural integrity of cellulose.

5. **Structure and Function**: Cellulose is insoluble in water and provides structural support to plant cells. It is the most abundant carbohydrate in the environment and plays a vital role in the plant's cell wall.

6. **Conclusion**: Therefore, the correct answer to the question "Cellulose is a polymer of" is beta-D-glucose.

**Final Answer**: Cellulose is a polymer of beta-D-glucose.

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