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A toxic chemical damages the outer plasma membrane of a living cell, causing it to lose its selective permeability. Which of the following would be the most immediate consequence?
  1. Disruption of osmosis and selective transport across the cell membrane
  2. Complete cessation of protein synthesis
  3. Permanent destruction of genetic material
  4. None of these
Explanation
  • Damage to the plasma membrane immediately disrupts osmosis and selective transport.
  • The plasma membrane controls what enters and leaves the cell.
  • Loss of selective permeability causes uncontrolled movement of water and substances.
  • This disturbs the cell's internal balance (homeostasis).

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