Give two alternative names for cell membrane.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Cell Membrane**: The cell membrane is the outermost layer of a cell that separates the interior of the cell from the external environment. It is crucial for maintaining the cell's internal environment.

2. **Identifying Alternative Names**: The question asks for two alternative names for the cell membrane.

3. **First Alternative Name**: One common alternative name for the cell membrane is "Plasma Membrane". This term is widely used in biological sciences to refer to the same structure.

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