The outermost limiting layer of a typical cell of mycoplasma is a

Options

A. Cell well
B. Cell membrane
C. Slime layer
D. Capsule

Answer

To solve the question regarding the outermost limiting layer of a typical cell of mycoplasma, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Mycoplasma**:
- Mycoplasma is a genus of bacteria known for being the smallest and simplest living cells. One of their unique characteristics is that they lack a cell wall.

**Hint**: Remember that mycoplasma are unique among bacteria due to their lack of a cell wall.

2. **Analyzing the Options**:
- **Option 1: Cell Wall**: This option is incorrect because mycoplasma do not have a cell wall. They are known for their absence of this structure.

**Hint**: Consider the defining features of mycoplasma when evaluating the presence of a cell wall.

- **Option 2: Cell Membrane**: This option is correct. Since mycoplasma lack a cell wall, the outermost limiting layer is indeed the cell membrane.

**Hint**: Think about what surrounds the cytoplasm in cells that do not have a cell wall.

- **Option 3: Slime Layer**: This option is incorrect. The slime layer is an unorganized layer found in some bacteria but is not the outermost layer for mycoplasma.

**Hint**: Recall that slime layers are not a defining feature of mycoplasma.

- **Option 4: Capsule**: This option is also incorrect. Capsules are organized structures that help in adhesion and protection, but they are not present in mycoplasma.

**Hint**: Consider the function of capsules and whether they are a characteristic of mycoplasma.

3. **Conclusion**:
- After analyzing all options, the correct answer is **Option 2: Cell Membrane**. This is the outermost limiting layer of a typical cell of mycoplasma.

### Final Answer:
The outermost limiting layer of a typical cell of mycoplasma is a **Cell Membrane**.