Which form of cancer does not form a tumor?

1. Which of the following mass extinction event marked the end of the reign of the dinosaurs?

2. What is the technical term for the sense of smell?

3. Which form of cancer does not form a tumor?

4. Which of the following planets has the strongest gravitational force?

5. Which scientist discovered the anti-biotic penicillin?

6. Which university's research team recently created lung tissue from stem cells?

7. Which of the following men is the only recognised survivor of both the Hiroshima and Nagasaki atomic blasts during World War II?

8. The case study of which family led to a large amount of evidence supporting a genetic contribution to schizophrenia?

9. Which of the following shark species is classified as the most dangerous to humans?

10. Who was the first man to travel to space?