stem cells

Question 1

what is a stem cell

Answer 1

A stem cell is an undifferentiated cell of an organism that can divide to produce many more cells of the same type

Question 2

What is the process of differentiation

Answer 2

a cell changes to become specialised for it’s job

Question 3

what are the two different types of stem cells in animals

Answer 3

Embryonic stem cells

Adult stem cells

Question 4

What is the use of an Embryonic Stem cells

Answer 4

they help form all different tissues and organs needed during development of a whole new individual

Question 5

What is the use of an adult cell

Answer 5

They can only differentiate to produce a few different cell types

they are predominantly used to replace cells lost through damage or to produce new cells for growth

Question 6

What is the benefit of embryonic stem cells

Answer 6

Have the potential to grow into any kind of cell

possibly useful in medical treatment of diseases

repair damaged organs by growing new tissue from stem cells

e.g making cells that produce insulin for people with diabetes

Question 7

what is an example of an adult stem cell and the benefits

Answer 7

Blood cells
used to replace faulty blood cells in sick people

Question 8

Where do adult cells come from

Answer 8

Bone marrow

Question 9

Where do embryonic stem cells come form

Answer 9

Embryo

Question 10

where are plant stem cells found

Answer 10

In meristem tissue

Question 11

what are meristem cells

Answer 11

They are unspecialised cells that can differentiate into the cells needed by the plant in regions where growth is occurring

Question 12

what are plant stem cell used for

Answer 12

Clone plants with desired characteristics

useful if plants had resistance to a particular disease

Question 13

what are the dangers of stem cells

Answer 13

Stem cells grown in the lab may become contaminated with a virus which could be passed onto the patient and make them sicker

Question 13

What are Adult stem cells beneficial for and give an example

Answer 13

Medical treatment

Treat some diseases such as Leukaemia

Question 14

Why are some people against stem cell research

Answer 14

human embryos shouldn’t be used for experiments since each one is a potential life

(unethical)

scientist should concentrate more on finding and developing other sources of stem cells , so people could be helped without having to use embryos