Cell wall consists of

Options

A. water, hemicellulose and cellulose+ pectin
B. cellulose , liqids and proteins
C. cellulose + proteins + pectin + water + lipids and hemicellulose
D. microfibrils and pectin

Answer

### Step-by-Step Solution

1. **Understanding the Cell Wall**: The cell wall is a structural layer that surrounds the plasma membrane of certain cells. It is found in organisms such as plants, fungi, and algae, but is absent in animal cells.

2. **Composition of the Cell Wall**: The cell wall is primarily composed of carbohydrates. The main components include:
- **Cellulose**: A polysaccharide that provides rigidity and strength to the cell wall.
- **Hemicellulose**: A group of polysaccharides that help to bind cellulose fibers together.
- **Pectin**: A polysaccharide that contributes to the cell wall's flexibility and is important in cell adhesion.
- **Water**: Present within the cell wall, contributing to its structure and function.
- **Structural Proteins**: Although present in small amounts, they play a role in maintaining the integrity of the cell wall.
- **Other Polymers**: In some cases, additional substances like lignin, cutin, or suberin may be present, providing additional strength or protective features.

3. **Permeability of the Cell Wall**: The cell wall is highly permeable, allowing the passage of solutes and solvent molecules due to the presence of pits.

4. **Conclusion**: Based on the components discussed, the correct answer to the question "Cell wall consists of" is:
- Water
- Hemicellulose
- Cellulose
- Pectin

### Final Answer
The cell wall consists of water, hemicellulose, cellulose, and pectin.

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