2.2 stem cells

Question 1

describe the role fo stem cells in animals

Answer 1

cells which can divide by mitosis to develop into specialised cells

Question 2

What role do stem cells play in the body?

Answer 2

• growth

- repair

Question 3

name the two different types of stem cells

Answer 3

• tissue

- embryonic

Question 4

where are embryonic stem cells found and state their properties?

Answer 4

early embryos and can develop into any type of cell

Question 5

where are tissue stem cells found and state their properties?

Answer 5

found throughout the body in adults and children. Found about a week after fertilisation. Used mainly for repair and can only form a few types of cell.

Question 6

State 3 medical uses of stem cells

Answer 6

-bone marrow transplant
destroy cancer cells and replace with a transplant of normal, blood forming stem cells
-skin graft
stem cells are sprayed onto the damaged area
-cornea repair
using patients own stem cells to fix damaged cornea. there is no risk of the transplant tissue being rejected

Question 7

What do stem cells have the potential to do?

Answer 7

divide to become different types of cells