Biology- Cell Division

Question 1

What is the cell cycle called

Answer 1

Mitosis

Question 2

What are the 4 stages of cell division (4 marks)

Answer 2

1) parent cell with 2 pairs of chromosomes are replicated
2) the chromosomes line up along the centre of the cell, divide and move to the opposite poles
3) the nucleus divides
4) each identical ‘daughter’ cell contains the same genes of the parent cell

Question 3

Why is mitosis important

Answer 3

-growth and development of multicellular organisms
- repairing damaged tissues
- asexual reproduction

Question 4

What are stem cells

Answer 4

Undifferentiated cells that can divide to make different types of cells

Question 5

Where are they found

Answer 5

-human embryos
-bone marrow
-some tissues and organs

Question 6

How can you use stem cells

Answer 6

-therapeutic cloning
-treating disease (diabetes and paralysis)
-replace damaged cells