Chloride ion (Cl-) concentrations are approximately 10x higher outside of cells than inside. Imagine you discovered a novel protein that is required in liver cells for transporting Cl - out of the cell up its concentration gradient, and further found that this protein only functions if the Na+/K + ATPase is active. Which of the following might you reasonably conclude about the Cl - transport protein? A. It could be a Na+/Cl - symporterB. It could be a K+/Cl - symporterC. It could be a Cl - ATPaseD. It must be a Cl - channel

Question

Biology

Asia Thornton

12 October, 02:30

Chloride ion (Cl-) concentrations are approximately 10x higher outside of cells than inside. Imagine you discovered a novel protein that is required in liver cells for transporting Cl - out of the cell up its concentration gradient, and further found that this protein only functions if the Na+/K + ATPase is active. Which of the following might you reasonably conclude about the Cl - transport protein? A. It could be a Na+/Cl - symporterB. It could be a K+/Cl - symporterC. It could be a Cl - ATPaseD. It must be a Cl - channel

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Answers (1)

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Frank Key · Answer 1

B. It could be a K+/Cl - symporter.

Explanation:

It could be a K+/Cl - symporter.

It is dependent on either the Na + or the K + gradient for its energy. Symport with Na + would require co-transport into the cell (down the Na + gradient), but our novel protein transports Cl - out of the cell.