Cystic fibrosis is a genetic disease that leads to the production of excessive, thick mucus in the respiratory tract, causing frequent and serious respiratory infections. The defect is due to the production of a faulty membrane protein for the transport of the chloride ion. The protein exists in membranes, but it doesnʹt function normally. Based on this scenario, what is occurring at the molecular level in a person with cystic fibrosis?
A) A receptor protein is being adversely affected.
B) A channel protein is being adversely affected.
C) Protein filaments in the cytoplasm are being adversely affected.
D) A recognition protein is being adversely affected.
E) A carrier protein is being adversely affected.

Question

Quizplus · Accepted Answer

The faulty membrane protein responsible for the symptoms of cystic fibrosis is a channel protein that facilitates the transport of chloride ions across cell membranes. When this protein does not function properly, chloride ions are not transported efficiently, leading to the production of thick mucus.

Cystic Fibrosis Is a Genetic Disease That Leads to the Production