Cancer

Question 1

What causes cancer?

Answer 1

changes in cells that lead to uncontrollable growth and division, forming a tumour.

Question 2

2 different types of cancer:

Answer 2

Benign - growths of cells contained in one place
- not cancerous
- grows until there is no room
- doesn’t invade other tissues

Malignant - the tumour grows and spreads to other tissues
- cancerous
- may split up, cells being carried in the bloodstream
- can travel to other organs
- cancer cells divide more rapidly and have longer life span than normal cell

Question 3

Risk factors for cancer

Answer 3

• Smoking
• Obesity
• UV light
• viral infection
• can inherit genes that increase the likelihood of getting cancer