What would happen if the plasma membrane ruptures or breaks down?

Explanation

### Step-by-Step Solution:

1. **Understanding the Plasma Membrane**: The plasma membrane is a vital structure found in both plant and animal cells. It acts as a barrier that separates the interior of the cell from the external environment.

2. **Function of the Plasma Membrane**: The plasma membrane is semi-permeable, meaning it selectively allows certain molecules to pass in and out of the cell while restricting others. This selective permeability is crucial for maintaining the cell's internal environment.

3. **Consequences of Rupture**: If the plasma membrane ruptures or breaks down, it loses its integrity. This means that it can no longer effectively control what enters or exits the cell.

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