Mutations

What are three types of mutations?

Addition, deletion, or substitution

Scientists think that cancer begins when something damages a cell's ____.

DNA

Cancer

a disease in which cells grow and divide uncontrollably

What is a cancer tumor?

a mass of abnormal cells

Tumor

a mass of abnormal cells that develops when cells divide and grow uncontrollably

Scientists think cancer begins when ___

a mutation occurs in DNA.

Mutation

any change in the DNA of a gene or chromosome

Cancer can spread when cells break off a tumor and are carried through the body by the ____________________.

blood stream

Cancer is a disease in which cells

grow and divide uncontrollably

Mutations are sometimes ____ to an organism

helpful

Mutations can cause a cell to produce an ____ protein during protein synthesis.

incorrect

Cancer is treated with surgery, ___, and drugs that destroy the cancer cells

radiation

A mutation can be passed to offspring only if it takes place in a ____ cell

sex

Chemotherapy

the use of drugs to treat a disease

Cancer causes the growth of ___.

tumors