Cancer+Notes+BH

according to the video you have 10000000000000 cells witin our bodies.

DNA is damaged by (radiation,sun, smoke, chemicals) mutates the cell to where it never dies. protection from cancer PCD--> programmed cell death. (Cancer ignores the signal to commit suicide) 2 genes (gene has the information a protien)

these 2 genes are damaged in cancer cells

protooncogene tumor supressors

tumor supressors--> normally inhibits all division after DNA damage no longer inhibits all division

Cells that are cancer cells --> the ends of there DNA telomeres never get shorter the nucleus takes up most of the cell

NO FUNCTION except to divide

cancer cells can pile up on each other normal cells will stop dividing if they touch another cell but cancer cells are not like that. Cancer cells make tumors