Cancer

cancer definition

a disease in which cells grow and divide uncontrollably there are more than 100 types of cancer

mutation definition

any change in DNA of a gene

mutations in sex cells

can be passed to offspring

cancer cells can break off of the tumor and

enter the bloodstream

Cancer treatments include

radiation: less harmful for normal cells chemotherapy: the use of drugs to treat disease surgery: to remove the tumor if cancer cells have not spread

types of mutations

substitution - one base replaces another deletion - a base is removed additions - a base is added

Cancer is named for

the part of the body where it began

cancer begins when:

there is a mutation in DNA then a cell develops in an abnormal way and forms a tumor (mass of abnormal cells)