Stem Cells Pg.16 🩵

Question 1

Stem cells can _______ into different types of cells.

Answer 1

Differentiate.

Question 2

Cells differentiate (change) to become _______ for their job.

Answer 2

Specialised.

Question 3

_________ cells are called stem cells.

Answer 3

Undifferentiated.

Question 4

Stem cells can produce _____ ______ undifferentiated cells and differentiate into ________ types of _____.

Answer 4

Lots more.
Different.
Cells.

Question 5

Stem cells found in early _______ embryos are called __________ stem cells.

Answer 5

Human.
Embryonic.

Question 6

Embryonic stem cells can turn into any kind of _____.

Answer 6

Cell.

Question 7

______ also have stem cells. They’re only in ________ _________ in the body, like _______ _______ ( a tissue inside bones).

Answer 7

Adults.
Certain places.
Bone marrow.

Question 8

Adult stem cells can only _______ certain types of specialised cells e.g. blood cells.

Answer 8

Produce.

Question 9

Stem cells from embryos and bone marrow can be ______ in a lab.
The cloned cells can be used in ________ or _________.

Answer 9

Cloned.
Medicine or research.

Question 10

Stem cells may be able to cure many _______.

Answer 10

Diseases.

Question 11

Embryonic stem cells could be used to replace _________ _____ in sick people.

Answer 11

Faulty cells.

Question 12

It’s possible to make an _______ that has the same _____ as a patient. This is called _______ _______.

Answer 12

Embryo.
Genes.
Therapeutic cloning.

Question 13

This means that the stem cells from the embryo wouldn’t be ________ by the patients body.

Answer 13

Rejected.

Question 14

However, there are _____ involved in using stem cells in medicine. For example, the stem cells could be _______ with a virus. The virus could be _______ __ to a patient and make them _______.

Answer 14

Risks.
Infected.
Passes on.
Sicker.

Question 15

Some people feel embryos __________ be used for research because each one could be a ________ _____.

Answer 15

Shouldn’t.
Human life.

Question 16

Others think that ________ _________ who are suffering is _______ important than the rights of embryos.

Answer 16

Curing patients.
More.

Question 17

They argue that the embryos used in research are usually ________ ____ from fertility clinics. If they weren’t used for research, would probably just be _________.

Answer 17

Unwanted ones.
Destroyed.

Question 18

Some people feel that scientists should be finding ________ _______ of stem cells.

Answer 18

Other sources.

Question 19

Stem cells can _______ identical plants.

Answer 19

Produce.

Question 20

Plants have _____ called meristems.

Answer 20

Tissues.

Question 21

Meristems are where _______ occurs - in the tips of roots and ______.

Answer 21

Growth.
Shoots.

Question 22

The meristems _________ stem cells that can differentiate into any type of _______ _______.
They can do this through the plants whole ______.

Answer 22

Contain.
Plant cell.
Life.

Question 23

These stem cells can be used to make clones or plants _______ and _______.
Clones can be made of:
Rare species - to prevent them being ______ ____.
Crop plants that have features that are useful for ________, e.g. plants aren’t killed by a disease.

Answer 23

Quickly and cheaply.
Wiped out.
Farmers.

Question 24

How can stem cells be used to preserve rare plant species?

Answer 24

Copies of the plant can be made by taking stem cells from the meristem of the plant and growing them into new, genetically identical plants (clones).