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

Explanation

**Step-by-Step Solution:**

1. **Understanding the Role of the Plasma Membrane:**
- The plasma membrane, also known as the cell membrane, is crucial for maintaining the integrity of the cell. It acts as a barrier that regulates what enters and exits the cell, thus facilitating the exchange of materials.

2. **Consequences of Rupture or Breakdown:**
- If the plasma membrane ruptures or breaks down, it loses its ability to control the movement of substances. This means that essential nutrients, ions, and water may no longer be able to enter the cell, while waste products may not be effectively removed.

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