3.8 the cell cycle

Question 1

what is a tumour?

Answer 1

uncontrolled cell growth & division

Question 2

how is a tumour caused?

Answer 2

mutation in genes

Question 3

what’s the difference between benign and malignant tumours?

Answer 3

benign:
- more compact
- grow slower
- less life-threatening

malignant:
- grows rapidly
- less compact
- life-threatening

Question 4

describe how chemotherapy treats cancer.

Answer 4

• prevents DNA replicating
• inhibits metaphase (which interfere with spindle formation)
  -> disrupts cell cycle