QUESTIONS

(a) Cystic fibrosis is the most common genetic disease in Britain and it results when a protein known as CFTR is defective.
(i) Explain what the role of the CFTR protein is in a healthy person

(2)

 

(ii) Explain what the effects of having defective CFTR proteins are.

(2)

 

(iii) State the main symptoms of cystic fibrosis.

(3)