The thin, porous membrane present on the outer surface of a cell is called the

Options

A. plasma membrane
B. nuclear membrane
C. cytoplasm
D. protoplasm

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the name of the thin, porous membrane present on the outer surface of a cell.

2. **Understand the Options**: The options provided are:
- Plasma membrane
- Nuclear membrane
- Cytoplasm
- Protoplasm

3. **Analyze Each Option**:
- **Plasma Membrane**: This is indeed a thin, porous membrane that surrounds the cell, separating its interior from the external environment.
- **Nuclear Membrane**: This membrane surrounds the nucleus, not the cell itself.
- **Cytoplasm**: This is a gel-like substance found inside the cell, not a membrane.
- **Protoplasm**: This term refers to the living contents of a cell, including cytoplasm and the nucleus, but is not a membrane.

4. **Select the Correct Answer**: The only option that fits the description of a thin, porous membrane on the outer surface of a cell is the **Plasma Membrane**.

5. **Conclusion**: Therefore, the answer to the question is the **Plasma Membrane**.

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