biology basics of stem cells and cloning Flashcards
what 2 things can a stem cell do?
self renewal (copying) differentiation (specializing)
when a stem cells self renews, what does it become?
a stem cell
when a stem cells differentiates, what does it become?
a specialized cell
what is a stem cell?
cells with the ability to develop into different cell types
what is the purpose of stem cell self renewal?
maintain the stem cell pool
what is the purpose of stem cell differentiation?
replace dead or damaged cells throughout your life
what is potency?
the measure of a stem cell’s ability to become other cells
what is a totipotent stem cell?
every kind of cell including body cells, germline cells, placenta cells
what is a body cell also known as?
somatic
where are totipotent stem cells found?
the morula (before the embryo)
what is a pluripotent stem cell?
every kind of cell including body cells and germline cells
where are pluripotent stem cells found?
embryo
where are multipotent adult stem cells found?
tissue
what are the 2 types of stem cells?
embryonic
adult
where are embryonic stem cells found?
blastocyst (early embryo)