Question

Choose true or false for the following statements. 1. Cancer cells are clonal. 2. Benign tumors are invasive. 3. Papillomavirus can cause breast cancer in humans. 4. Metastatic tumors can invade other tissues. 5. Most cancers are the result of exposure to environmental agents. 6. Viruses can cause normal cells to be transformed into malignant cells.

Answer 1

1. Cancer cells are clonal - True.

2. Benign tumors are invasive - False.

3. Papillomavirus can cause breast cancer in humans - False.

4. Metastatic tumors can invade other tissues - True.

5. Most cancers are the result of exposure to environmental agents - True.

6. Viruses can cause normal cells to be transformed into malignant cells - True.