stem cell exam qs

Question 1

Give two reasons why pancreas transplants are not used for the treatment of type II
diabetes.

Answer 1

Faulty (insulin) receptors;
3. (Treated / controlled by) diet

Question 2

Give two characteristic features of stem cells

Answer 2

replicate
can differentiate

Question 3

Group A was a control group. Explain two ways in which Group A acts as a control

Answer 3

Shows the effects of surgery;
2. Allows effects of transplants

Question 4

Suggest how the growth of new blood vessels into damaged heart tissues could increase
the rate of repair of tissues.

Answer 4

Greater blood supply (to damaged areas);
2. Bringing more oxygen / glucose for respiration;
3. Brings more amino acids for protein synthesis;

Question 5

Some of the children in the trial developed cancer. How might the insertion of the
DNA have caused cancer?

Answer 5

Affects tumour suppressor gene;
Inactivates (tumour suppressor) gene;