Inner wall of Gram (-) bacteria is formed of

Options

A. Lipoprotein
B. Mucopeptide
C. Chromoprotein
D. Glycoprotein.

Answer

To answer the question about what the inner wall of Gram-negative bacteria is formed of, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Gram-negative Bacteria**:
- Gram-negative bacteria have a unique cell wall structure that is different from Gram-positive bacteria. They do not retain the crystal violet dye during the Gram staining process, which is a key characteristic.

2. **Identifying the Cell Wall Composition**:
- The cell wall of Gram-negative bacteria is primarily composed of a thin layer of peptidoglycan (also known as mucopeptide). This layer is much thinner than that found in Gram-positive bacteria.

3. **Defining Peptidoglycan**:
- Peptidoglycan is a polymer made up of sugars and amino acids. It forms a mesh-like layer outside the plasma membrane of the bacteria, providing structural support and shape.

4. **Evaluating the Options**:
- The options given are lipoprotein, mycopeptide, chromoprotein, and glycoprotein.
- Among these, "mycopeptide" is a term that refers to peptidoglycan, which is indeed the correct component of the inner wall of Gram-negative bacteria.

5. **Conclusion**:
- Therefore, the inner wall of Gram-negative bacteria is formed of **mycopeptide** (peptidoglycan).

### Final Answer:
The inner wall of Gram-negative bacteria is formed of **mycopeptide**.