6. Initiation requires a signal from...?
- Endocrine system e.g. Ras
- Cells environment e.g. Ras
- CNS e.g. Ras
- PNS e.g. Ras
7. Which of these does p53 NOT do?
- p53 does all of these
- induces expression of genes for DNA repair
- induces expression of genes for cell cycle arrest
- induces expression of genes for apoptosis
8. Why must a cell repair before replication?
- Prevent mutations
- All of the above
- Prevent chromosome abnormalities
- Prevent potential cancers
