What controls the cell cycle? What happens if a cell doesn’t pass a checkpoint?

1. What controls the cell cycle? • What happens if a cell doesn’t pass a checkpoint?

2. Cell growth • Growth factors • PDGF=Platelet-derived growth factor

3. Preventative Measures • Separation is very careful • Density-dependent inhibition • Anchorage dependence • Apoptosis

4. Cancer • No growth factor needed • Can be immortal if nutrients available

6. ABCDE of Skin Cancer Signs your mole should be checked by a doctor

7. A – asymmetrical

8. B – border

9. C – color

10. D – diameter • If larger than a pencil eraser

11. E – elevation