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Question 6Cancer metastases are diﬃculty to detect.Question 7Skin damage and skin cancer is caused by ultraviolet lightstriking DNA and causing thymine dimers or even cuttingthe DNA. In most cases this causes death of the skin cell.But cancer is uncontrolled cell growth. How can exposureto light cause uncontrolled cell growth when it mostly killscells? Chose an answer which best answers this questionQuestion 8Which of the following is true about oncogenes.Question 9Gleevec is a drug which helps cure a form of leukemia.