Which of the following is a characteristic of CFTR?
Understand the Problem
The question is asking to identify a true characteristic of the CFTR (Cystic Fibrosis Transmembrane Conductance Regulator) protein from the options provided. This requires knowledge of the CFTR's function.
Answer
CFTR functions as an ion channel, transporting chloride ions across cell membranes. Malfunction leads to thick mucus buildup.
CFTR (Cystic Fibrosis Transmembrane Conductance Regulator) functions as an ion channel, specifically transporting chloride ions across cell membranes. When the CFTR protein malfunctions or isn't produced because of mutations, it results in the buildup of thick mucus.
Answer for screen readers
CFTR (Cystic Fibrosis Transmembrane Conductance Regulator) functions as an ion channel, specifically transporting chloride ions across cell membranes. When the CFTR protein malfunctions or isn't produced because of mutations, it results in the buildup of thick mucus.
More Information
The CFTR protein is essential for regulating the movement of chloride and thiocyanate ions and water across epithelial cell membranes. When it is defective, it causes cystic fibrosis.
Tips
A common mistake is to think CFTR directly produces mucus. It regulates ion transport, which affects mucus consistency.
Sources
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