Which of the following statements accurately explains why the respiratory system is affected by smoking in humans?

Subject: General Awareness | Topic: Science | Difficulty: MEDIUM

Options

1. (A) Nicotine increases the ability of blood to carry oxygen to various tissues
2. (B) Carbon monoxide present in smoke combines with haemoglobin and reduces the transport of oxygen to tissues
3. (C) Smoking increases the surface area of the alveoli, leading to better exchange of gases in tissues
4. (D) Tar in tobacco strengthens the walls of the alveoli

Verified Answer

Option (B): Carbon monoxide present in smoke combines with haemoglobin and reduces the transport of oxygen to tissues

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