unit 3 cancer

Question 1

what is cancer caused by

Answer 1

-a build up of mutations in a single cell
-when cells reproduce, they can only copy what is already there

Question 2

can you inherit cancer

Answer 2

no but you can inherit a higher risk and mutations

Question 3

what are the parts of the cell cycle

Answer 3

mitosis - when cells divid
interphase - when the cell is doing normal activities or growing larger to split

Question 4

how is cancerous cells different from normal cells

Answer 4

-they divid rapidly and produce a lot more cells
-they stop doing their original job and decrease function in that area in the body
-their interphase is shorter and they no longer respond to normal signals of growth

Question 5

what are the 2 types of tumours

Answer 5

benign and malignant

Question 6

describe a benign tumour

Answer 6

-usually grows in one place and doesn’t invade other tissues
-cell growth can put physical pressure on organs making them life threatening
-treatment = surgery,medication,radiation

Question 7

describe a malignant tumour

Answer 7

-cells spread through blood stream and get lodged in other organs
-divid more rapidly and live longer,disrupting more tissue
-often starts as a benign tumour
-treatment = surgery where possible, radiation, chemotherapy, immunotherapy