B4 pt 2

Question 1

Why does uncontrolled mitosis result in the formation of a tumour?

Answer 1

The bad cells within our body paired with uncontrolled mitosis can lead to abnormal cells being made which can result in a tumour

Question 2

Cancer cells are immortal; why can this be a problem?

Answer 2

The cell will never die and continue to divide and effectively take over a part of the body. There is no way the boy can biologically stop this process

Question 3

Malignant tumours have their own blood supply. Explain why malignant tumour are more dangerous than benign?

Answer 3

It can easily move from one part of the body to another part and form another malignant tumour because it is already linked to the circulatory system.

Question 4

3 treatments of cancer

Answer 4

Removal of tumour by surgery
Radiotherapy-directed at one area of the body-X rays and gamma rays stop cells dividing
Chemotherapy-Drugs travel all around the body and kills dividing cells

Question 5

Which treatment is necessary for cancer that has spread around the body?

Answer 5

Chemotherapy as the drugs travel around the body and kills cells that are dividing

Question 6

Why cant chemotherapy be used safely on a pregnant woman?

Answer 6

It stops all cells in the body from dividing which can be dangerous for the baby as cells they need to divide and develop into a foetus arent dividing. no mitosis means no growth and repair