The Cell Cycle

Question 1

What are the 3 stages of the cell cycle

Answer 1

Interphase - resting phase, no Division takes place

Nuclear Division- when the nucleus divides into 2(mitosis ) or 4 (meiosis)

division of the cytoplasm -

Question 2

What’s cancer

Answer 2

a group of diseases caused by damage to the genes that regulate mitosis and the cell cycle

Question 3

What is cancer the result of

Answer 3

Damage to the genes that regulate mitosis and the cell Cycle. This leads to uncontrolled growth and division of cells.

As a consequence, a group of abnormal cells, called a tumour, develops and constantly expands in size

Question 4

What’s difference between malignant rumours and benign tumours

Answer 4

Malignant tumours grow rapidly, are less compact and are more likely to be life threatening

Benign - grow slower, are more compact and less likely to be life threatening

Question 5

How do drugs used to treat cancer disrupt the cell cycle

Answer 5

Preventing dna from replicating

Inhibiting the metaphase stage of mitosis by interfering with spindle formation

Question 6

Why do people loose hair with cancer

Answer 6

As cancer cells have a fast rate of division, they are damaged to a greater degree than normal cells. Those normal body cells such as hair producing cells, that divide rapidly are also vulnerable to damage