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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.