The membrane transport protein Na+-K+ ATPase carries both Na+ and K+ ions across the plasma membrane. Typically the concentration of K+ inside cells is about 30 times higher inside the cell than outside. The concentration of Na+ is about 20 times less inside the cell than outside. Based on this information, which statement below is false? A. The proper functioning of Na+-K+ ATPase could serve as an energy source for secondary active transport proteins. B. It is a symport. C. Transport of Na+ and K+ must be coupled to an exergonic reaction. D. Na+-K+ ATPase likely undergoes conformational changes during transport.
The membrane transport protein Na+-K+ ATPase carries both Na+ and K+ ions across the plasma membrane. Typically the concentration of K+ inside cells is about 30 times higher inside the cell than outside. The concentration of Na+ is about 20 times less inside the cell than outside. Based on this information, which statement below is false? A. The proper functioning of Na+-K+ ATPase could serve as an energy source for secondary active transport proteins. B. It is a symport. C. Transport of Na+ and K+ must be coupled to an exergonic reaction. D. Na+-K+ ATPase likely undergoes conformational changes during transport.
Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter3: The Plasma Membrane And Membrane Potential
Section: Chapter Questions
Problem 2TAHL: Assume that a membrane permeable to Na+ but not to Cl- separates two solutions. The concentration of...
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The membrane transport protein Na+-K+ ATPase carries both Na+ and K+ ions across the plasma membrane. Typically the concentration of K+ inside cells is about 30 times higher inside the cell than outside. The concentration of Na+ is about 20 times less inside the cell than outside. Based on this information, which statement below is false?
A. The proper functioning of Na+-K+ ATPase could serve as an energy source for secondary active transport proteins.
B. It is a symport.
C. Transport of Na+ and K+ must be coupled to an exergonic reaction.
D. Na+-K+ ATPase likely undergoes conformational changes during transport.
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