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Transcript
Cell Cycle and Facts Cell Replacement Regeneration Aging Cancer Cell Cycle Responsible for growth and development in our bodies Through the process of mitosis (cell division) our body ensures the numbers of chromosomes stay the same throughout the body Humans have 46 chromosomes Tomato plants have 24 Cell Replacement Cells will go through the cell cycle at different rates Life span of different cells Brain cells 30-50 years Blood cells 120 days Stomach lining cells 2 days Regeneration This is when the cell cycle has to accelerate because of harm to the body Broken bones Cut skin Torn ligaments Aging At a cellular level aging is believed to be the result of cells that are: Incapable of dividing anymore And/ or mitosis being slowed down Cancer Normal conditions DNA controls the rate of cell division DNA can also controls the rate of cell death Cancer Cell Divide uncontrollably Because of high cell numbers tumours form If in the blood or lymphatic system the cancer cells can move around the body.