Chemical nature of cellulose is

Options

A. Disaccharide
B. Polypeptide
C. Polysaccharide
D. Polynucleotide.

Answer

**Step-by-Step Solution:**

1. **Identify the Options**: The question provides four options regarding the chemical nature of cellulose: disaccharide, polypeptide, polysaccharide, and polynucleotide.

2. **Define Cellulose**: Cellulose is a complex carbohydrate that is a major component of the cell wall in plants. It is essential for providing structural support.

3. **Determine the Type of Carbohydrate**: Cellulose is classified as a polysaccharide. This is because it is made up of long chains of monosaccharide units, specifically glucose.

4. **Linkage Type**: Cellulose consists of glucose units linked together by beta-1,4-glycosidic bonds. This type of linkage is crucial for forming the long, fibrous structure of cellulose.

5. **Monomeric Unit**: The monomeric unit of cellulose is glucose, which is a simple sugar (monosaccharide). Since cellulose is composed of many glucose units, it is categorized as a polysaccharide rather than a disaccharide (which consists of only two monosaccharides).

6. **Non-reducing Sugar**: Cellulose does not have a free aldehyde group, which classifies it as a non-reducing sugar. This characteristic is important in distinguishing it from other types of carbohydrates.

7. **Conclusion**: Based on the above points, the correct answer to the question regarding the chemical nature of cellulose is "polysaccharide."

**Final Answer**: The chemical nature of cellulose is a polysaccharide.

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