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 of 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 Wall**:
- The bacterial cell wall is primarily composed of a polymer called peptidoglycan.

2. **Identify the Components of Peptidoglycan**:
- Peptidoglycan is made up of two main derived monosaccharides:
- N-acetylglucosamine (GlcNAc)
- N-acetylmuramic acid (MurNAc)

3. **Analyze the Given Options**:
- The options provided are:
- A) Deoxyribose
- B) N-acetylglucosamine
- C) Mannitol
- D) Ascorbic acid

4. **Evaluate Each Option**:
- **Option A**: Deoxyribose is a sugar found in DNA and is not a component of the bacterial cell wall.
- **Option B**: N-acetylglucosamine is indeed one of the derived monosaccharides that make up peptidoglycan in the bacterial cell wall.
- **Option C**: Mannitol is a sugar alcohol found in algae and is not related to bacterial cell walls.
- **Option D**: Ascorbic acid is vitamin C and does not play a role in the composition of bacterial cell walls.

5. **Conclusion**:
- Based on the analysis, the correct answer is **Option B: N-acetylglucosamine**.