Stem Cells

Question 1

Stem cells

Answer 1

Stem cells are unspecialised cells that have the potential to divide and make more stem cells by mitosis or to become another type of cell with specialised function.

Question 2

Two types of stem cell

Answer 2

Embryonic Stem Cells

Adult (Tissue) Stem Cells

Question 3

Production of blood cells

Answer 3

Blood contains red and white blood cells that are repeatedly replaced by new blood cells produced by stem cells. These stem cells are found in red bone marrow- found inside bones.

Question 4

Uses of Stem Cells in Medicine

Answer 4

Current uses include Bone marrow transplantation, Skin grafting and corneal repair
Stem cells can be cultured (grown) in laboratories. These cells have huge medical potential, as they can become any type of specialised cell.

Question 5

Embryonic Stem Cells vs Adult Tissue Stem Cells

Answer 5

Stem cells have been used in medicine for many years – bone marrow transplantation is a form of stem cell therapy using adult stem cells. However, adult stem cells can only form a limited range of specialised cells. Embryonic stem cells can have the potential to make any body cell.

Question 6

Ethical Objections to Stem Cells

Answer 6

 Human life should never be created as a means to an end.
 Catholic Church hold the belief that new life begins at the moment of Conception and embryos should have full human rights.
 Use of embryonic stem cells is not justified when other sources of stem cells are available