Question

Identify the correct order in which breast cancer develops.

Answer 1

Cancer develops through a multistep process in which normal, healthy cells in the body go through stages that eventually change them to abnormal cells that multiply out of control. In most cases, cancer takes many years to develop.

Normal cells in the body communicate with each other and regulate each other's proliferation (division). Cells proliferate to replace worn-out cells. When cancer occurs, cells escape the normal controls on their growth and proliferation. This escape from control can happen through a variety of pathways.

Part of the multistep process to cancer includes acquiring damage (mutations) to genes that normally regulate cell proliferation. A series of permanent mutations in tumor suppressor genes and proto-oncogenes (see p. 4) are needed before cancer develops. Buildup of damage in these genes can result in uncontrolled cell proliferation. In some cases, further damage can lead to cells that can break away from the primary tumor and form cancers at other sites in the body (metastasis).

Breast tissue is particularly sensitive to developing cancer for several reasons. The female hormone estrogen stimulates breast cell division. This division can increase the risk of making damage to DNA permanent. Furthermore, breast cells are not fully matured in girls and young women who have not had their first full-term pregnancy. Breast cells that are not fully mature bind carcinogens (cancer causing agents) more strongly and are not as efficient at repairing DNA damage as mature breast cells.

Answer 2

A) mutiation of normal cells-tumor growth-invasions of tissues-metastasis-metastatic tumor .

B) invasion of tissues-metastasis-mutation of normal cells-tumor growth-mestastatic tumor.

C) metastasis-mutation of normal cells-invasion of tumor-mestastatic tumor-tumor growth.

Answer 3

If you read the information I just provided for you, you will be able to awnswer it :)

Answer 4

but I will help you in the third paragraph it says "Part of the multistep process to cancer includes acquiring damage" wich means mutate

Answer 5

it has to be B) before you can acciquire breast cancer you have to have somthing invade you. take a wound for example you cant get a cut untill somthing cuts you...you cant get breast cancer untill some kinda of infectious disease enters yoour body

Answer 6

i got it wrong..

Answer 7

its A (:

Answer 8

Which of the following is a good reason for why tobacco smoke is considered a carcinogen

Answer 9

A duh.