Which derived monosaccharide is component of bacterial cell wall?

Options

A. Dexoyribose
B. N-acetyl glucosamine
C. Mannitol
D. Ascorbic acid

Answer

To solve the question regarding which derived monosaccharide is a component of the bacterial cell wall, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Bacterial Cell Walls**:
- Bacterial cell walls are primarily composed of a substance called peptidoglycan. This is a crucial component that provides structural integrity to the bacterial cell.

2. **Identify the Components of Peptidoglycan**:
- Peptidoglycan is made up of repeating units of two types of sugars: N-acetylglucosamine (GlcNAc) and N-acetylmuramic acid (MurNAc). Here, we focus on the derived monosaccharide.

3. **Examine the Options Provided**:
- **Option 1: Deoxyribose** - This sugar is a component of DNA and is not found in bacterial cell walls.
- **Option 2: N-acetylglucosamine** - This is a derived monosaccharide that is indeed a component of peptidoglycan in bacterial cell walls.
- **Option 3: Menthol** - This is a compound derived from mint and is not a monosaccharide.
- **Option 4: Ascorbic acid** - Also known as vitamin C, this is not a component of cell walls.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option 2: N-acetylglucosamine**. This derived monosaccharide is a key component of the bacterial cell wall.

### Final Answer:
**The derived monosaccharide that is a component of the bacterial cell wall is N-acetylglucosamine.**