Stem cells

Question 1

What do the gametes fertilise to form?

Answer 1

A zygote

Question 2

What is a zygote?

Answer 2

A single cell which was fused by the fusion of gametes in sexual reproduction

Question 3

Explain what happens to the zygote in mitosis?

Answer 3

becomes an embryo, then becomes a hollow ball of cell an embryo, the inner cells of this wall are the embryonic stem cells that differentiate to form cells of our body.

Question 4

What are a good source of adult stem cells?

Answer 4

Bone marrow and skin cells

Question 5

What happens to people due to stem cells not working?

Answer 5

People suffer and die because their parts of their body is not working properly

Question 6

Give an example of stem cells not working. (nerve cells)

Answer 6

Spinal injuries, because the nerves cannot repair themselves

Question 7

Give an example of stem cells not working. (diabetes)

Answer 7

Type 1 diabetes, they have to inject themselves with insulin because of thier specialised cells stopped working in the pancreas

Question 8

A breakthrough of what with embryonic stem cells?

Answer 8

They have cultured it and can make organs from them as they can differentiate them, can help people with a transplant.

Question 9

Why are stem cells important for plants?

Answer 9

To produce large numbers of the same plants, cheaper and quicker, it can save plants from extinction and you can make disease resistance plants