Question
State the causes of cancer.
✓
Answer
→Causes of Cancer:
→Normal cells transformed into cancerous neoplastic cells by physical, chemical and biological agents.
→These agents are called carcinogens.
→Physical agents: ionizing radiation like X-rays, gamma rays, non-ionizing radiations like UV-rays.
→Chemical agents: Tobacco smoke, sodium azaide, Methyl ethane sulphonate.
→Biological agents:
→Cancer causing viruses called oncogenic viruses have a gene called viral oncogenes, induce transformation of neoplastic cells.
→Cellular oncogenes (c-onc) or proto oncogenes in normal cells, when activated lead to oncogenic transformation of the normal cells.
→Normal cells transformed into cancerous neoplastic cells by physical, chemical and biological agents.
→These agents are called carcinogens.
→Physical agents: ionizing radiation like X-rays, gamma rays, non-ionizing radiations like UV-rays.
→Chemical agents: Tobacco smoke, sodium azaide, Methyl ethane sulphonate.
→Biological agents:
→Cancer causing viruses called oncogenic viruses have a gene called viral oncogenes, induce transformation of neoplastic cells.
→Cellular oncogenes (c-onc) or proto oncogenes in normal cells, when activated lead to oncogenic transformation of the normal cells.
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