When cell wall of a bacterial cell is partially and completely removed, protoplasm takes a spherical shape, it is called as

Options

A. protoplast
B. spheroplast
C. bacterioplast
D. DNA

Answer

To solve the question, we need to understand the terms related to the structure of bacterial cells and the effects of removing their cell walls. Here’s a step-by-step breakdown:

### Step 1: Understand the Structure of Bacterial Cells
Bacterial cells have a rigid outer layer known as the cell wall, which provides shape and protection. The protoplasm is the living content of the cell, including the cytoplasm and organelles.

**Hint:** Recall that the cell wall is crucial for maintaining the shape of bacterial cells.

### Step 2: Identify the Effects of Cell Wall Removal
When the cell wall of a bacterial cell is removed, either partially or completely, the protoplasm can no longer maintain its usual shape. Instead, it tends to adopt a spherical shape due to the lack of structural support.

**Hint:** Think about what happens to a balloon when it loses its outer layer.

### Step 3: Differentiate Between Protoplast and Spheroplast
- **Protoplast**: This term refers to a bacterial cell that has had its cell wall completely removed. It is essentially the protoplasm without any cell wall.
- **Spheroplast**: This term is used for bacterial cells (especially Gram-negative bacteria) that have had their cell wall partially removed. The remaining parts of the cell wall still provide some structural integrity, but the cell takes on a spherical shape.

**Hint:** Consider the extent of cell wall removal when determining the correct term.

### Step 4: Analyze the Options Given
- **Option 1: Protoplast** - This is not correct as it refers to complete removal of the cell wall.
- **Option 2: Spheroplast** - This is correct as it refers to the spherical shape taken when the cell wall is partially removed.
- **Option 3: Bacterioplast** - This is not a standard term used in this context.
- **Option 4: DNA** - This is unrelated to the question.

**Hint:** Focus on the definitions of the terms provided in the options.

### Step 5: Conclusion
Based on the definitions and the effects of cell wall removal, the correct answer to the question is **Option 2: Spheroplast**.

**Final Answer:** Spheroplast