12.3 cancercells

Question 1

cancer cells don’t

Answer 1

follow regulators

Question 2

when growth factors are depleted

Answer 2

they continue

Question 3

theories to why cancer doesn’t stop

Answer 3

1) it makes its own growth factors
2) don’t need growth factors
3) abnormal signal pathway
4) abnormal cell control system

Question 4

transformation

Answer 4

where a normal cell is converted to a cancer cell

-usually it is recognized and destroyed

Question 5

benign tumor

Answer 5

remains in one place

Question 6

malignant tumor

Answer 6

can travel to impair functions of multiple organs

Question 7

how o they spread to other tissues

Answer 7

the cell surface changes so they lose attachments to neighboring cells

Question 8

cancer cells can secrete signals that make the blood vessels

Answer 8

grow towards the tumor

Question 9

metastasis

Answer 9

spreading cancer cell to locations distant from original site
–blood stream
lymph vessels

Question 10

treatment of localized tumor

Answer 10

high energy radiation

damages dan in cancer cells more than normal cell b/c they have lost the ability to repair

Question 11

treat metazoic tumors

Answer 11

chemotherapy
-drugs toxic to actively dividing cells
throughout the circulatory system to get al the tumors