Cell wall is made up of

Options

A. Several layers of microfibrils
B. Several micellae
C. Cellulose molecules
D. Glucose molecules

Answer

### Step-by-Step Solution:

1. **Identify the Cell Wall**: The cell wall is a rigid outer layer that provides structure and protection to certain types of cells, including plant cells, fungal cells, and bacterial cells.

2. **Composition of Plant Cell Walls**: In plant cells, the primary component of the cell wall is **cellulose**. Cellulose is a polysaccharide made up of long chains of glucose units, which gives the cell wall its strength and rigidity.

3. **Composition of Fungal Cell Walls**: In fungal cells, the cell wall is primarily made up of **chitin**, which is another type of polysaccharide, but different from cellulose.

4. **Composition of Bacterial Cell Walls**: In bacterial cells, the cell wall is composed of **peptidoglycan**, which is a complex structure made of sugars and amino acids.

5. **Evaluate the Options**:
- The first option mentions "several layers of microfibril," which is incorrect as microfibrils are components that help in the structure but do not constitute the cell wall itself.
- The second option refers to "several micelle," which is also incorrect as micelles are related to lipid transport and not to cell wall structure.
- The third option states "cellulose molecule," which is correct as it is the main component of the plant cell wall.
- The fourth option mentions "glucose molecule," which is misleading because while glucose is a building block of cellulose, the cell wall itself is not made up of glucose.

6. **Conclusion**: The correct answer to the question "Cell wall is made up of" is **cellulose molecules**.