Chapter 2: Cell Division

Question 1

What are the stages of cell division

Answer 1

Stage 1- the replication of DNA, the cell increases in size and it makes more sub cellular structures ( mitochondria, ribosomes, chloroplasts)
Stage 2- the two sets of mitochondria are pulled to either side of the cell and the cell splits this process in mitosis
Stage 3-the two cells form separately and the process is complete

Question 2

How are stem cells different from ever other cell in the body

Answer 2

They are undifferentiated cells they have the ability to multiply into a wide variety different specialised cells

Question 3

Name 3 different areas we can harvest stem cells from the human body

Answer 3

Bone marrow
Blood
Brain
Liver

Question 4

Stem cells in plants

Answer 4

They are harvested from the plant meristems
They are used to clone the adult plant of a species of flower very quickly and economically
They can save endangered species of plant from extinction

Question 5

What are the problems with stem cell research?

Answer 5

Stem cells come from aborted embryos. Some people believe that this is morally wrong.
The process of developing these cells is long,slow,difficult and EXPENSIVE
Although they have been able to develop adult stem cells they have only been able to develop them into a small range of cells

Question 6

Are chromosones found in pairs?

Answer 6

Yes

Question 7

What is the cell cycle?

Answer 7

It is the process of cells dividing in stages

Question 8

H

Answer 8

H