Multiple choice

The component of living cells affected by the pollutant SO2 is

  1. nucleus

  2. cell wall

  3. plasmodesmate

  4. All cell membrane system
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SO2 primarily affects the entire cell membrane system by dissolving in cellular fluids to form sulfurous acid. This acidic disturbance damages plasma membranes and internal organelle membranes, disrupting membrane integrity, transport processes, and cellular homeostasis. The nucleus, cell wall, and plasmodesmata are not the primary targets.

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