Cystic Fibrosis Is a Genetic Disease in Humans in Which

question 66

Multiple Choice

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.
-If the sodium ion concentration outside the cell increases, and the CFTR channel is open, in what direction will chloride ions and water move across the cell membrane?

• A) Chloride ions will move out of the cell, and water will move into the cell.
• B) Both chloride ions and water will move out of the cell.
• C) Chloride ions will move into the cell, and water will move out of the cell.
• D) Both chloride ions and water will move into the cell.
• E) The movement of chloride ions and water molecules will not be affected by changes in sodium ion concentration outside the cell.

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Definitions:

Projective Techniques

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Sentence Completion

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