Question

importance of cell cycle

Answer 1

it shows the cycle of life

Answer 2

"I would focus on the cell cycle checkpoints. Without control of cell replication there is huge potential for tumorigenesis. Probably this is in your textbook in much better detail, but I found this quick synopsis of checkpoints on Wikipedia (under cell cycle):
"Checkpoints are used by the cell to monitor and regulate the progress of the cell cycle. If a cell fails to meet the requirements of a phase it will not be allowed to proceed to the next phase until the requirements have been met. Several checkpoints are designed to ensure that damaged or incomplete DNA is not passed on to daughter cells. At the end of the G1 phase, G2 phase and after DNA has been replicated in the S phase it is checked for damages. At the end of the M phase a checkpoint is present to stop cytokinesis in case the chromosomes are not properly aligned on the mitotic spindle."

Obviously, we need for cell to be able to divide for normal functions sich as development and healing. But, I think the main importance of the cell cycle is to make sure this replication is carefully controlled."