Which is correct about cell wall of bacteria and fungi ? Both have

Options

A. Glycopeptide
B. N-acetylglucosamine
C. N-acetylglcosmine and cellulose
D. Chitin

Answer

To answer the question about the cell wall composition of bacteria and fungi, we will analyze the components of each organism's cell wall step by step.

### Step-by-Step Solution:

1. **Identify the Cell Wall Composition of Bacteria**:
- The cell wall of bacteria is primarily composed of **peptidoglycan**.
- Peptidoglycan itself is made up of two main components: **N-acetylmuramic acid** and **N-acetylglucosamine**.

2. **Identify the Cell Wall Composition of Fungi**:
- The cell wall of fungi is mainly composed of **chitin** and some other polysaccharides.
- Chitin is a polymer derived from **N-acetylglucosamine**.

3. **Analyze the Options Given**:
- **Option A: Glycopeptide** - This is incorrect because neither bacteria nor fungi have glycopeptides in their cell walls.
- **Option B: N-acetylglucosamine** - This is correct because both bacteria (as part of peptidoglycan) and fungi (as part of chitin) contain N-acetylglucosamine.
- **Option C: N-acetylglucosamine and cellulose** - This is incorrect because true fungi do not have cellulose in their cell walls, and bacteria do not have cellulose either.
- **Option D: Chitin** - This is incorrect because chitin is only present in fungi and not in bacteria.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option B: N-acetylglucosamine**, as it is the only component that is present in the cell walls of both bacteria and fungi.

### Final Answer:
**The correct option is B: N-acetylglucosamine.**