Save
Biology GCSE
Cell division and stem cells (2.2)
Stem cells
Save
Share
Learn
Content
Leaderboard
Learn
Created by
Olivia Morris
Visit profile
Cards (14)
What are cells in early development of an embryo called?
Stem cells
What are stem cells?
Undifferentiated cells
that can become
any cell
What does differentiated mean?
A
cell
which
hasn't
become
specialised
yet
Where are stem cells obtained?
In
embryos
and
adult bone marrow
What happens if cells are removed from an embryo?
They will
differentiate
into any
cell type
called
embryonic stem
cells
What can adult stem cells differentiate into?
Related cell types
only, e.g
bone marrow
cells can differentiate into
blood
cells and
immune system
cells but not any others
How are stem cells used?
Treat
medical conditions
and
disease
What medical conditions may use stem cell transplants?
Type
1 diabetes
,
multiple sclerosis
,
spinal cord
/
brain injury
What is the best time to obtain embryonic stem cells?
5
day old embryo- embryonic stem cells are
hard
to obtain
When are bone marrow transplants carried out?
In cases of
blood cancer
, e.g leukaemia or when
blood cells
have been
destroyed
by e.g
chemotherapy
What are the benefits of the use of stem cells?
No
rejection
, no need to find a
donor
, no need for
tissue typing
What are some clinical issues with using stem cells?
No guarantee of success,
difficult
to find a suitable donor,
difficult
to
obtain
, risk of
contamination
of
cells
What are some ethical issues with stem cells?
A source of
embryonic
stem
cells
is
unused
embryos
(from
IVF
),
therapeutic
cloning
What is therapeutic cloning?
Using
technology
for medical purposes