1
Q
What is a stem cell?
A
An unspecialised cell that can mature into different specialised cells.
2
Q
What a totipotent stem cell?
A
- can differentiate into any type of cell
- occur for a limited time in an embryo
3
Q
What is a pluripotent stem cell?
A
- can mature into any cell except from placental cell
- occur in the embryo
4
Q
What is a multipotent stem cell?
A
- can specialise into a few different types of body cells
- found in adult mammals
5
Q
What is a unipotent stem cell?
A
- can only specialise into one type of body cell
- found in adult mammals
6
Q
What are induced pluripotent stem cells (iPS)?
A
- a unipotent cell is forced to become a pluripotent cell by adding 4 genes which code for 4 transcription factors
