Select incorrect statement for capsule and slime layer :

Options

A. made up of polysaccharides and proteins
B. can be highly specific and immunogenic
C. essential for bacterial survival
D. responsible for giving gummy and sticky character to the cell.

Answer

To determine the incorrect statement regarding the capsule and slime layer, we can follow these steps:

### Step 1: Understand the Definitions
- **Capsule**: A capsule is a well-organized layer made primarily of polysaccharides that surrounds the bacterial cell wall. It serves various functions, including protection against phagocytosis and aiding in adherence to surfaces.
- **Slime Layer**: The slime layer is a less organized and more diffuse layer compared to the capsule. It is also made of polysaccharides but can include proteins and other substances. It helps in adherence and provides a protective barrier.

### Step 2: Analyze Each Statement
1. **Statement 1**: "Made up of polysaccharide and proteins."
- This statement is incorrect because the capsule is primarily made of polysaccharides, while the slime layer can include proteins. The phrasing suggests that both layers are made of both components, which is misleading.

2. **Statement 2**: "Can be highly specific and immunogenic."
- This statement is correct. Capsules can be specific in their structure and can provoke an immune response, making them immunogenic.

3. **Statement 3**: "Essential for the bacterial survival."
- This statement is also correct. While not all bacteria require a capsule or slime layer for survival, many do benefit from the protection and adherence these structures provide.

4. **Statement 4**: "Responsible for giving gummy and the sticky nature of the cell."
- This statement is correct as well. Both the capsule and slime layer contribute to the sticky nature of bacterial cells, aiding in their ability to adhere to surfaces.

### Step 3: Identify the Incorrect Statement
- Based on the analysis, the first statement is the incorrect one regarding the capsule and slime layer.

### Final Answer
The incorrect statement for capsule and slime layer is: **"Made up of polysaccharide and proteins."**

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