Stem Cells

Question 1

2 types of stem cells.

Answer 1

One type is stem cells are unspecialised cells in animals that can divide or differentiate.
Stem cells can be embryonic or tissue stem cells

Question 2

Therapeutic uses of stem cells

Answer 2

Repair of corneas. (Damaged by chemical attack).
Regeneration of damaged skin. (Producing a skin graft for burn victims)
Bone marrow transplant (treat patients with blood cancer).

Question 3

Ethical issue of stem cells

Answer 3

Embryonic stem cells involve the destruction of an embryo.

Question 4

Research uses of stem cells

Answer 4

•as model cells to study how diseases develop.
•for drug testing

Question 5

Embryonic stem cells

Answer 5

Can differentiate into all the cell types that make up the organism and so are pluripotent.

All genes in embryonic stem cells can be switched on and so these cells can differentiate into any type of cell.

Question 6

Tissue stem cells are involved in the

Answer 6

Growth, repair and renewal

Question 7

Tissue stem cells are

Answer 7

Multi potent as they can differentiate into all the types of cell found within a particular tissue.

Question 8

Blood stem cells

Answer 8

Blood stem cells located in bone marrow can give rise to all types of blood cell.