The cellular abnormality that causes cystic fibrosis is
A)absence of the ability to feel pain.
B)abnormal chloride channels that trap salt inside cells lining the lung passageways.
C)abnormal potassium channels in heart muscle.
D)extra receptors for a growth factor.

Question

Quizplus · Accepted Answer

The cellular abnormality that causes cystic fibrosis is the abnormal chloride channels that trap salt inside cells lining the lung passageways. This leads to thick mucus accumulation, which can cause lung infections and respiratory problems. Absence of pain sensation, abnormal potassium channels in heart muscle, or extra receptors for a growth factor are not associated with cystic fibrosis.

The Cellular Abnormality That Causes Cystic Fibrosis Is