PLEASE HELP!! Which of the following happens when cancer occurs?
1) the control of the cell cycle is impaired
2) cells cannot pass the G1 checkpoint
3) apoptosis or programmed cell death takes place
4) the cells can no longer enter the cell cycle
As cells become abnormal, old and damaged cells do not go through the cell cycle and can not regenerate like usual & the damaged. Any new cells are the cancerous ones that triple in number.
