What are the different functions performed by cell membrane ? Justify your answer

Explanation

### Step-by-Step Solution:

1. **Introduction to Cell Membrane**: The cell membrane, also known as the plasma membrane, is a vital structure that surrounds the cell. It plays a crucial role in maintaining the integrity of the cell and facilitating various functions.

2. **Separation of Cells**: One of the primary functions of the cell membrane is to separate the internal environment of the cell from the external environment. This separation is essential for maintaining homeostasis within the cell.

3. **Protection and Support**: The cell membrane provides structural support to the cell. It helps maintain the shape and size of the cell, ensuring that it remains intact and functional.

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