stem cells

Question 1

what are stem cells?

Answer 1

unspecialised cells

they make copies of themselves
(self renewal)

and make specialized cells of the body (differentiate)

Question 2

what are the 2 types of stem cell?

Answer 2

embryonic
tissue (adult)

Question 3

what are embryonic stem cells?

Answer 3

can differentiate (become specialized)
into any type of cell in the body

are found only in the blastocyst stage of a foetus development

Question 4

what are tissue (adult) stem cells?

Answer 4

found in developed tissues in the body

can only specialize into a narrow range of cells

Question 5

why are stem cells important?

Answer 5

specialized cells cannot make copies of themselves so the body needs stem cells to replace specialized cells

used in the growth and repair of body tissues

Question 6

what is an organelle?

Answer 6

a structure that has one or more specific jobs to perform in the cell