Cystic fibrosis is a genetic disease in humans in which the CFTR protein,which functions as a chloride ion channel,is missing or nonfunctional in cell membranes.The CFTR protein belongs to what category of membrane proteins?

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The CFTR protein functions as a chloride ion channel, which means it allows the passage of ions through the cell membrane. Channels are a type of membrane protein that form hydrophilic pores or channels through which ions and other small molecules can move by passive diffusion or facilitated diffusion. Therefore, the CFTR protein belongs to the category of hydrophilic channels. Choice A, gap junctions, are intercellular channels that allow communication between adjacent cells. Choice B, carrier proteins, bind to specific molecules and transport them across the membrane by undergoing a conformational change. Choice C, electrogenic ion pumps, consume ATP to create an electrochemical gradient across the membrane. Choice D, cotransporters, move molecules across the membrane in the same direction as another molecule that is also being transported.

Cystic Fibrosis Is a Genetic Disease in Humans in Which