3, 4–benzopyrene causes

Options

A. Leukemia
B. Cytosilicosis
C. Lung cancer
D. Tuberculosis

Explanation

**Step-by-Step Solution:**

1. **Understanding 3,4-Benzopyrene**:
- 3,4-Benzopyrene is a polycyclic aromatic hydrocarbon (PAH) with the chemical formula C20H12. It is produced when organic substances are not completely burned.

2. **Sources of 3,4-Benzopyrene**:
- This chemical can be found in various sources, including:
- Exhaust emissions from vehicles
- Smoke from wood fires
- Tobacco smoke
- Emissions from oil and gas products

3. **Toxicity of 3,4-Benzopyrene**:
- 3,4-Benzopyrene is known for its high level of toxicity. It can adversely affect the human nervous system and immune system.

4. **Impact on the Immune System**:
- The chemical can specifically target and damage white blood cells (WBCs), which are crucial for the immune response.

5. **Association with Lung Cancer**:
- One of the most significant health risks associated with 3,4-Benzopyrene is its potential to cause lung cancer.
- It does this by mutating key positions in the P53 gene, which is essential for regulating the cell cycle and preventing tumor formation.

6. **Conclusion**:
- In summary, 3,4-Benzopyrene is a harmful chemical that can lead to serious health issues, particularly lung cancer, due to its mutagenic properties.