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NEETZoologyHuman Health and Diseases

Carcinogen Type Example A. Physical carcinogen 1. Proto-oncogenes B. Chemical carcinogen 2. Tobacco smoke C. Biological carcinogen 3. Oncogenic viruses D. Cellular oncogenes 4. UV radiation

Options

  1. AA-2;B-4;C-3;D-1
  2. BA-4;B-3;C-2;D-1
  3. CA-4;B-2;C-3;D-1
  4. DA-4;B-2;C-1;D-3

Correct answer

C. A-4;B-2;C-3;D-1

Step-by-step solution

Physical carcinogens like UV radiation can damage DNA. Chemical carcinogens in tobacco smoke are a major cause of lung cancer. Biological carcinogens include oncogenic viruses that carry viral oncogenes. Cellular oncogenes or proto-oncogenes can become activated under certain conditions leading to cancer.

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