Question

Cystic fibrosis is the result of a malfunction of the cell in transporting which of the following ions?

1) Cl⁻
2) K⁺
3) Na⁺
4) glucose
5) OH

Answer 1

Cystic fibrosis is caused by a malfunction in the transportation of Cl⁻ ions. The CFTR protein, responsible for transporting Cl⁻ ions out of cells, is defective in individuals with cystic fibrosis. This leads to the accumulation of thick and sticky mucus in the lungs, causing blockages and increased risk of infections.

Step-by-step explanation:

Cystic fibrosis is the result of a malfunction of the cell in transporting Cl⁻ ions. In healthy individuals, the CFTR protein is responsible for transporting Cl⁻ ions out of the cells. However, in individuals with cystic fibrosis, a mutation in the CFTR gene leads to the production of a defective channel protein that is unable to transport Cl⁻ ions effectively. As a result, the mucus becomes thick and sticky, leading to blockages in the lungs and increased susceptibility to bacterial infections.